The ventilator provides outstanding Dn,e,w 42dB (A) for areas with high external noise transmission, those likely in PPG4 categories B, C and D. Performance required. The primary purpose of trickle ventilation is to remove polluted indoor air from a building and replace it with ’Fresh’outside air. 6–10. Supplying developers, contractors and window. This is a type of acoustic soundproofing. 400mm. Surface mounted window vents are specifically designed to operate in conjunction with a routered airflow slot through the frame or sash. Hopefully the first of many more upgrades, and after seeing Thermally Broken suites specified for over 2 years, good to see the requirements finally stick on a…Secondary glazing does not need trickle vents which improves the acoustic performance. Waves is the ideal solution if, for practical reasons, a centralised ventilation system is not possible. As one of the market leaders in tile ventilator manufacture in the UK, Glidevale Protect’s range has been collated for over 35 years and includes hundreds of dedicated profiled tile ventilators matching almost. All new builds since the early 1990’s require passive ventilation and the easiest and simplest form of achieving this has been trickle vents in windows and doors. Trickle ventilators provide ventilation to the room without the need to open the main window, reducing noise levels as a consequence. Vent sizes available: V25, V50, V75 and canopy sizes: C25, C50 and C75. When. Kitchen and Bathrooms are good locations for the use of trickle vents because of the condensation problems, but. VIEW PROJECTS. The problem I'm having is I can hear everything outside, from neighbours talking to cars passing. The Trickle Vent brings you the Sonovent Acoustic Solution which was developed to meet the two aspects of living comfort: Physical Comfort – fresh and healthy air without draught; Acoustic Comfort – up to 56 dB noise reduction; There are also four types (S/M/L/XL) with four possible air gasps (10,15,20 or 25 mm). AirLiner: Extends from. In the closed position the slot trickle option provides upward defl ecting, draught free, ventilation up to 2500mm2/m (Open Area) Geometric Modular Sizes Geometric Equivalent Overall Overall Overall Open Area Area Slot Size Vent Length Hood Length 2000mm2 1705mm2 13mm x 160mm 240mm 205mm 3000mm2 2384mm2 13mm x 235mm 315mm 280mm Welcome to the HandleStore range of trickle vents for the replacement of existing, tired, missing or broken slot vents found on double glazed windows. View. Zehnder Group UK. Trickle ventilation can be provided to ensure there is always an adequate level of background ventilation. redeem. View. Satin Brass. 3. So if the ventilator is effectively blocking sound in some way then the vent will let a lot less noise in than the window does when opened just a mm or two. New building regs for future homes 2025 in new builds will not have them, further more they will be trippled glazed. They are controllable, to give the option of having them open or closed. Our windows include trickle vents to provide ventilation and to comply with the latest. Glazpart is proud to launch a new range of plastic injection moulded trickle ventilators to meet the needs of today’s building designers, window fabricators and installers. Acoustic trickle vent. Range includes: Standard through frame. However all future homes will require continuous mechanical extract to circulate air and even CMEV. The product is specifically designed for “Through Profile” PVC-U applications using a 10 mm routered slot, and is available in two. Our comprehensive range of acoustic trickle window ventilation is becoming ever more popular and you can even pair up with a number of our internal Trickle Vents such as. More information [email protected]. The Simon 19000 Acoustic and Carrier Bar Option are supplied to give you the glazed-in solution for your ventilation requirements. Browse 11 products that are ready to use on your projects. V. The SM ULTIMA is a high quality, ABS acoustic window vent offering 2600mm2 EA airflow and providing a 40 db Dne W sound reduction in the. Snap on cover panel. Download. Yale SlimVent Trickle Vent Set (White, 4000EA) Brand: SD Hardware. SCHÜCO BY GSW VENTILATION VENT AWS VV. 595mm trickle vent available in white only. Installing a background ventilator through a wall that provides the equivalent areas described in Approved Document F, volume 1 can be an. Highest performing acoustic background ventilator. This also allows them to be compliant with the latest building regulation requirements. Rytons Super Acoustic Controllable LookRyt AirCore is a simple and efficient answer to background ventilation. Glidevale Fresh 99H Humidity Sensitive Wall Vent – BIM Object. VAT. Trickle vents also work in conjunction. Acoustic SL (Slimline). Excellent acoustic control was a priority, as the site is surrounded by transport routes, including a railway line. Nothing stopping you from. BV, BV - TV. Choice of finish. Cowled Super Acoustic Controllable LookRyt® AirCore® (Up to 50 dB Dn,e,w) Controllable air vent for background room ventilation. Acoustic Information (31) User Guides (47) Fault Finding (13) Calculators (1) Test Results (36) URL (8) Manuals and Documentation (Obsolete) (35). Fire Safety. 894 The Crescent, Colchester CO4 9YQ United Kingdom. There is then also the cost issue. 0 ventilation system to keep your home ventilated effectively and energy-efficiently. Compare that to our old trickle vent that was 23mm, that’s just over 90% thinner. They are also necessary in Patio doors and French doors, if they are the only apertures in the room. 45 Inc Vat. As well as boasting a low-profile design, the unit utilises 220x90 spigots to allow easy use of flat ducting in tight void spaces in apartments. Surface mounted and screw fixed to the frame these window vents are great for general replacement where window vents are broken or missing. Designed to be a functional part of a window that lets air circulate through your home, according to Building Regulations, trickle vents come highly recommended. Yeah, it might be the same mechanism as what they use for mufflers (in which you. RRP from £8. The unit has three fixed trickle speeds of 6l/s, 7l/s or 8l/s and two fixed boost speeds of 13l/s. £5. You’ll also find clear plastic window ventilators that fit directly into the glass. 125 months. Insect, rodent and ember screensCover the sides and top and bottom of your air vent with acoustic foam as you go. Acoustic block ventilators are large, aesthetically unattractive and often cannot be accommodated. S13 2000 Internal Trickle Ventilator Clip Fix: TS1131751:. 71 £ 8. Single. Internal baffle reduces light and draughts. Your Price Apply / Login. The actual minimum performance specification forTrickle Vents. VAT. Proposal It has been proposed to redevelop the former Maybloom Club site, Bostall Hill, London, SE2 0RA, toTrickle Vents allow you to have a small aperture in a window for a controlled amount of ventilation. Product Description. co. We offer a next day delivery timeframe, please be aware this is our aim and not a guarantee. Recesses over a 16mm slot. Wasn't sure where to post this ! We moved into a new house in June2010, when it started getting colder we closed the trickle vents on all the windows but still have a draught coming through them. Resources. Download. They deliver a constant airflow without having to actually open the. Inc. Addition of a wet room to an existing building:. 18Trickle vents help to deliver natural ventilation in buildings. Glidevale TVES4dB Acoustic Energy Saver Humidity Sensitive Trickle Vent – BIM Object Download. Resources. About this product. If you live near a busy road or an airport, trickle vents can be designed with additional acoustic options to give even more noise reduction benefits. 1000 Pa. Another advantage of Titon’s metal trickle vents is that they are designed to fit over the same slot detail (13mm or 16mm slot), making an upgrade a simple swap. They are there for a reason taping them up will only cause issues elsewhere. Acoustic performance of 33 Db and an EA rating of 4600, the V4000 is great value and available from stock for next day delivery. Trickle Vents by "Simon" we have these vents available in various colours and sizes. Your Price Apply / Login. Available in standard, acoustically attenuated (for noisy install locations) and humidity sensitive. Happy trickle vent day! As of today, June 15th 2022, the newly revised Building Regulations for England have come into force. Aluminium Trickle Vents. Titon says it has maintained its position as the industry leader through constant research and product development, ensuring the company is still. If the windows are modern double glazing with trickle vents, it may be beneficial to replace the vent covers with acoustic trickle vent covers. 5mm (2500EA) 215mm (5000EA) 29. Standard trickle vent. The SF Xtra is factory-made to standard sizes. News: Titon Appoints New CFO. Acoustic FV (Framevent) Supplied with a PVCu internal flap unit and aluminium external canopy. stabilised. Trickle Vents are an excellent way to allow air flow and ventilation without the issue of dust, dirt, and insects. #1. Learn More . 250-368mm L with air brick fitted. They are opened and closed manually. Lockmaster. Our largest vent, the TVALdB800, is capable of sound reduction up to 42dB Dn,e,w. Up to 40 db Dne W. All. W x H x D: 260 x 90 x 7mm. Please make any allowances for fittings beads, gaskets etc, or for manufacturing tolerances. Recently organised window fittings at a relatives house. Improved Db reduces noise to new levels of performance, especially in the closed position. tr ickle vents but those on the noisy façade will need acoustic trickle vents (AVO paragrap h B. This SlimVent and Canopy set from Yale is a part of our comprehensive range of trickle vents that enables window and door manufacturers to meet the requirements of the latest revisions to Building. Acoustic trickle vent. Acoustic window vents are the answer! Our range of high-performing acoustic trickle vents for windows block out noise and help to soundproof, along with allowing fresh air in to create a comfortable, well-ventilated environment that combats condensation. BV, BV - TV. Our parent company The Glass and Glazing Federation outlines the current correct guidance on using trickle vent windows. Acoustic trickle vent. D n,e,w (C;Ctr) – Open position. Using Trickle vent to reduce noise. Air Brick: Terracotta, buff/sand, white, grey, blue/black, black, brown. Acoustic Duct Versions. Features & Benefits. Summary 1. Vent-Axia's large range of products are available for a wide variety of purposes and surroundings. What was surprising was the result of testing the ‘acoustic’ slot vent, for which a 35dB reduction was claimed. £79. VAT. 08 Inc. For use on timber and upvc windows and doors. View. The acoustic performance of glazing is currently measured in accordance with ISO 10140-2:2010, previously ISO 140-3:1995 [1, 2]. FREE DELIVERY on. The SF Xtra is a high performance, surface mounted aluminium slot ventilator. 6 cfm @ 1. Consealed 90⁰ hinges for windows and casement doors. 6 cfm @ 1. Spent ages reading about it and it seems that they make a huge difference in terms of noise. Restrictor with ventilation position. Remove the vents,stick masking tape over the holes refit vents. 07 Jan. Our window vents are subtly integrated into your façade — and their acoustic damping comes as a bonus. Available Colors:The overall vent length. FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. co. 98, Chase CB £107. RW Simon Ltd have launched a range of acoustic ventilators to assist clients in creating a satisfactory solution for all their acoustic requirements. I discuss sound mazes in more detail in the article linked above, but watch this video for steps on how to build a sound maze. 4. Here’s some useful advice on how to achieve compliance. 1,393 posts. . The acoustic attenuators come in three sizes; 25mm, 50mm and 75mm, which provide different dB reductions. Q. The acoustic Trickle Vents can also be powder coated to any standard RAL colour. We are Closed 23rd - 26th December & 30th December - 1st January (Open as usual 27th 28th 29th December Back to normal Hours 2nd January 2024). Ventilation Volume Acoustic Performance Acoustic testing has been conducted on the Elevate™ Series 400 series. posted. Where high acoustic performance is required trickle vents should be avoided as they will have a detrimental effect. Customer Service: 01276 408404. New higher equivalent area confirmed by the BRE. In noisier locations, such as near a busy road or an airport, the trickle vent can be designed with additional acoustic options giving even more noise reduction benefits. Butt hinges as standard for 180°. Verified 3 months ago . Acoustic laminated glass; Sash Horns. Read More. Acoustic trickle vent. Finish (inner and outer). com / 01206 713801 Product Product Code (L) Length (W) Width (P) Projection Closed-Open Free Area (mm2) Slot Detail SF Xtra 2500EA Vent only TA5220 425 23 10-24 4207 SF 418 Canopy only TA5005 418 23 27 5114 SF Xtra Sound Attenuator 2500EA Vent 25mm TA5221 464 35 37-51 3470 FREE Same-Day Despatch with Next Working Day Delivery on All Orders Over £95*. RW Simon Ltd have launched a range of acoustic ventilators to assist clients in creating a satisfactory solution for all their acoustic requirements. 2500EA. Supplied with a removable protective cover. Ventilation helps you to protect the building fabric long-term, save energy and retain the value of your property. The acoustic attenuators come in three sizes; 25mm, 50mm and 75mm, which provide different dB reductions. Up to 47 db Dne W. As the name suggests, these are trickle vents with added insulation. Since 1936, Vent-Axia has been manufacturing a large range of efficient ventilation products helping improve indoor air quality in homes & commercial buildings. 57 Ex. . Suffix product code with:-265 (White), -898 (Desert Sand), -242 (Almond), -068 (Bronze). The ‘p’ (projection) dimension of each can vary depending on if it is open or closed. Acoustic Dn,e,w (+/-) – 2900EA version – vent open 33 (-1;0), vent closed 51 (. V. Google has come up with various options. Trickle Vents by "Greenwood" we have these vents available in various colours and sizes. Acoustic ratings – see above. THIS AREA IS CURRENTLY BEING UPDATED – PLEASE FEEL FREE TO DOWNLOAD BROCHURE FOR FULL INFORMATION>. Trickle Vents are designed to provide fresh air ventilation for improved in-home air quality while the window remains closed and secure. Non-electric acoustic though wall vent, provides controlled background ventilation and noise attenuation up to 50dB Dn,e,w. The trickle vent is constatntly closed due to the noise, will an acoustic vent be a significant improvement on a closed vent or only compared to an open basic vent. Acoustic window vents Acoustic Energy Saver, Humidity-sensitive 3815mm 2 4000mm 2 39dB Acoustic Low Proile 1777 / 1600mm 2 4400 / 4400mm 2 40-42dB. 16 years ago. Window Ventilation;Configurations and results. 18,395. Ventilation building regulations are changing in England from 15th June 2022. Filter and condensation protection The main performance concerns of Trickle Vents are the ventilation rate, thermal insulation, acoustic resistance, water tightness, and air permeability. As acoustic experts, we do not recommend trickle vents. These trickle vents are screwed to the frame and can be operated by simple finger control. When the vent was removed, leaving just the opening, thereAs of the 15th of June 2022, new regulations were introduced, making it a legal requirement for windows in England to be equipped with trickle vents. Acoustic Vents are the ideal solution where air must enter a room whilst reducing the sound leakage and ingress. 3. Acoustic STC – S13 4000 vent – open 33dB – closed 45dB Acoustic STC – XS13 412 vent – open 32dB – closed 41dB Acoustic STC – XS13 497 vent –. RW Simon Framevent 795mm 5000EA . The Trickle Vent, Schüco VentoLife is an air purification device with a multistage filter which removes from the air up to 99. Brookvent™ is an award-winning manufacturer of high-performance window ventilation systems and market-leading MVHR systems. Window vents let the heat out. Are the trickle vents available in various colours? Cover the sides and top and bottom of your air vent with acoustic foam as you go. VAT. Are the trickle vents available in various colours?The fans run 24 hours per day (usually 22 hours on trickle and 2 hours on boost) but this is directly related to occupancy in homes. Adding an extra pane of glass with our triple glazing will only provide a small increase in sound insulation, if all three panes are of the same thickness. Mantis 4 . TV2000 Internal Trickle Ventilator:. 47 (-1;-2) dB. It can be locked in the minimum as well as maximum flow position. 2) Are they straightforward to retrofit, ie do i just unscrew my existing vent, slide in the new one and screw in to place or is there more to it. bulk or standard packed (as sets or separate internal ventilators & external grills) mix and match colours. Colour. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR. We have an extensive range of air vents from top trade brands manufactured to meet current building regulations with products suitable for most areas and applications. 2) Are they straightforward to retrofit, ie do i just unscrew my existing vent, slide in the new one and screw in to place or is there more to it. The self-regulating non-return valve prevents annoying chilly draughts, while the window vent itself is also designed for improved acoustic comfort. Construction Industry Professional, Yoga Teacher and Life Enthusiast Report this post Report Report400mm Tan and White Trickle Vents (internal and external fittings) £9. Modularity of acoustic sets provides fl exibility for installation and acoustic performance. Available in 3 external cowling colours. Let us know how you want the parts delivered and we can arrange it! New in this edition are rendered CAD images to give a clear view of our products. New building regs for future homes 2025 in new builds will not have them, further more they will be trippled glazed. £3. 66 Inc. Buy Now. WHITE 400mm Trickle vents from just £3. White. Habitable rooms and kitchens: 8,000mm2EA, Bathrooms: 4,000mm2EA. A trickle vent above a French door is small and narrow in comparison. Remove the vents,stick masking tape over the holes refit vents. Specifying one different pane thickness will increase sound insulation. UK Manufacturer of home mechanical ventilation systems and hardware for windows and doors, including handles, hinges, trickle vents and extract fans. Inc. This includes products such as the surface mountable SM. Acoustic trickle vents now make it possible to obtain planning permission for new developments that are situated near a busy road, train lines or an industrial site that would have been refused. Ventilation levels 47% RH - 2500mm ventilation area 65% RH - 3815mm 2 v entil ao r ENERGy SAVER, HUMIdITy SENSITIVEwall. Replacement Locks. Explore our product database and get technical information on VELFAC product ranges - including open features, accessories and more. The RW Simon Ltd TTF Slimline window trickle ventilator is a through frame trickle ventilator that is a robust, yet stylish aluminium ventilator. ventilation (Glidevale acoustic low profile vent *TVALdB450/800) to achieve up to *40/42dB Dn,e,w sound reduction. Our team of experts are dedicated to meeting all of your requirements and will offer you the help and advice needed to create a beautiful and stylish property. Duco Acoustic Ventilators. Although this vent supports compliance, we would urge you to read our handy guide before you purchase which summarises the new requirements. Meets World Health Organisation recommended reduction of 33dB. A hardwood subframe can act as a thermal barrier, as aluminium is a great heat conductor, the wooden subframe prevents cold bridging from the fabric of the building onto the aluminium. The ventilator has been designed with upward air deflection to eliminate replacement air. VAT. *Series 5 & 6 Requires controls kit – sold separately. stabilised. Condensation reduction; If your home has a problem with. It is the shortest vent available to provide 5000mm² EA. Acoustically damped pipe fitted around unit to reduce external sources of noise such as traffic. Features a slim line design with two stage opening with the benefits of sound insulation. Available in 2 sizes: This vent 2500EA - 250mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) External. When acoustic ventilation is required this should also be considered at the design stage, as the noise factor may actually pre-determine the method of ventilation that will be used within the dwelling. 4080mm² measured area 2500mm² Equivalent Area. Continuous ventilation has many benefits and offers solution to many social housing issues - especially mould and condensation mould and condensation. Designed to be aesthetically pleasing and. 98, Interest: Jan-Aug £66. Glazed-in Acoustic Ventilators. Skip to content +44 (0) 1732 850770 projects@passivent. 79 inc VAT. Internal hit & miss grille manually adjusted with an easy sliding. Inc. The rafter air channels will need to be able to be installed between rafters and generally need at least 16 inches. VAT) Plastic trickle vents with fingertip vent adjustment. Yeah, it might be the same mechanism as what they use for mufflers (in which you have a. Designed for new builds, the DMEVe 100mm is recognised in SAP PDCB, NHBC and STAS approved. If you still think opening a window is the best way. When using a long vent this helps considerably! FeaturesChiltern Dynamics, market leaders in acoustic testing and modelling, found our windows capable of reducing noise levels by over 50dB — enough to quieten the busiest railway line or rumbling road. The room must achieve an internal noise level of 35 dB(A) over the duration of the measurement period. Designed for a shutter style open and closing mechanism. The Trickle Vent brings you the Sonovent Acoustic Solution which was developed to meet the two aspects of living comfort: Physical Comfort – fresh and healthy air without draught; Acoustic Comfort – up to 56 dB noise reduction; There are also four types (S/M/L/XL) with four possible air gasps (10,15,20 or 25 mm). Rytons are the leaders in vents for all applications and their acoustic performance is second to none. 16 years ago. 39 (0;-2) dB. Dimensions. Keep your trickle vents open. New rules (after 15 June, 2022) In line with the new rules, all windows and doors must be fitted with trickle vents, unless there is an alternative, dedicated ventilation system fitted. [report] [news] Monday 29th January 2018. 5000 mm2. The honeycomb grill is designed to filter out unwanted airborne debris. VAT. People feel the draught and close the vent or think the room loses its heat. There are 3 files available to download including: Brochures and Images. Home. Passivent are specialists in delivering natural ventilation and daylight solutions and a leading UK company in the field of sustainable and energy efficient solutions. Trickle vents will help avoid problems associated with poor ventilation in naturally ventilated spaces, including reduced risk of condensation, avoided over ventilation. These new rules feature in Approved Document F, which provides guidance on adequate ventilation in properties, and will impact both new and existing homes, along with extensions and self. Features a slim line design with two stage opening with the benefits of sound insulation. Then simply cut a space in the foam to glue each panel in. Your Price Apply / Login. The vents have an effective free area, in terms of how much air flows through, of around 4000 sq mm. V. Windows and doors are vital for effective background and purge ventilation, but performance has to meet the specific demands of Part F. of equivalent area ventilation and acoustic noise reduction. Click here >. 5 psf / 600Pa. Acoustic test data available upon request. Learn More. 9 February 2017 at 8:58PM. Glidevale Protect TVES4dB Acoustic Energy Saver Humidity Sensitive Trickle Vent - Trickle Vent . 180⁰ hinge. EN. NB: For optimum performance the ventilator should be installed on a flat surface free from defects, and sealant should be used along all edges to achieve the desired acoustic result. 5. It will end up oozing out and coming down the frames/glass. Filter and condensation protectionThe main performance concerns of Trickle Vents are the ventilation rate, thermal insulation, acoustic resistance, water tightness, and air permeability. Available in standard, acoustically attenuated (for noisy install locations) and humidity sensitive (which open in response to high humidity events), the range is designed to meet even the toughest window trickle ventilation requirements. Damp Weather Shutoff – dual control adjusts. Uses no electricity or mechanical power. Learn More . Sign up to our Newsletter. Surface mounted noise reducing acoustic trickle vent. This includes windows and doors in newly built homes, windows and doors in newly built extensions, as well as all replacement windows and doors, regardless of. 4 mm in the Classic range. VAT. Trickle Vents BPD Store stocks Passivent’s range of window tricklevents. Learn More . The Slimline Ventilator will provide Trickle Ventilation in accordance with the Building Regulations 2000: Part F: Approved Document F1 October 2010 and Scottish Building Regulations October 2011 Standard 3. • Exceptional attenuation of external noise pollution (up to 56dB), ideal for built up areas effected by traffic, railways and general noise pollution • Sonair F+ ventilates and cleans the air • Independently tested by the BRE • Air cleaning and filtration • Low energy consumptionThe complete acoustic kit (EHT + 125 mm duct + acoustic foam + acoustic canopy) can attain an acoustic attenuation of 52 dB, which places it among the best products available on the market. 09 (ex. Ex. Take your pick from a wide choice of essential trickle vents, noise-reducing acoustic trickle vents and glazed-in louvre grilles, all available in a wide choice of sizes, specifications and colours, from leading brands RW Simon, Greenwood, Glazpart and Duco. Simon Air Management have been manufacturing and supplying ventilation and air management systems to the glazing and construction industries for over 50 years. Thanks to its unique soundproofing capabilities, secondary glazing can reduce the noise pollution caused by various sources. This ensures the levels of total background ventilation stipulated in the Building Regulations are met, while the level of noise entering a property remains at a minimum. Buy Now. Retro-fitted core ventilator with external cowl for background room ventilation. Having recently moved into a new build apartment, the noise through the trickle vents in the bedroom window is driving me mad. When the vent was removed, leaving just the opening, thereAs of the 15th of June 2022, new regulations were introduced, making it a legal requirement for windows in England to be equipped with trickle vents. aircycle 3. The SF Xtra is factory-made to standard sizes. Features and benefits: Provides. Acoustic Ventilation is used in rooms which require ventilation but still a high level of soundproofing. As ventilation specialists, we are also proud to supply. Trimvent® Select Xtra S13 is a surface mounted plastic slot ventilator that fits over a 13mm slot in a window and provides an Equivalent Area (EA) of 2000mm2, 4400mm2 or 5000mm2. Available in 3 standard sizes and six standard colours, the unit. By installing trickle vents into your doors, you can ef. Lockable restrictor (160mm or 270mm) Click vent. There are two width variants, one for use over a 13mm slot, the other for a 16mm slot. Quantity. g in bedrooms, or living rooms, require 2 vents). The importance of indoor air quality is becoming increasingly recognised as buildings are built to be more airtight and more energy efficient. Acoustic Vents are the ideal solution to. Window vents let the heat out. Nineteen different Trickle Vents are reviewed from some of the performance aspects in this paper. Hit & Miss: 271mm L x 95mm H. Promote a healthy airflow. Passivent’s Soundscoop acoustic air transfer unit also combines crossflow ventilation with exceptional acoustic attenuation. It can be seen that the noise through the trickle vents dominates the overall levels, and a higher performance of the trickle vent would be required in the 500 Hz and 1 kHz octave bands if lower internal levels are sought. The 13/16” dimensions are always constant; therefore the body length is always 1-5/8” shorter. com TV Select S13 & TV Select Xtra XS13/XS16/XR16 Plastic slot ventilators Ò Suitable for PVCu, timber or aluminium. Although it is important for modern homes to be well insulated, properties still require a certain amount of ventilation in order to avoid problems with condensation and damp. The RW Simon Ltd Framevent HF (hi-flow) achieves 4,191mm2 EA on a length of only 415mm & the HF + (hi-flow +) achieves 5205mm2 EA on a length of 525mm.