Adjustments to slot heights may be needed to achieve the EQA requirements. 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. Hit & Miss: 271mm L x 95mm H. 180⁰ hinge. Acoustic laminated glass; Sash Horns. It can be locked in the minimum as well as maximum flow position. Ventilation Volume Acoustic Performance Acoustic testing has been conducted on the Elevate™ Series 400 series. £7. We do get asked how to cure damp and mould around windows and the first question we ask is "what ventilation do you have in the room". External canopy grille (Glidevale Ultravent Grille, supplied separately) provides weather and 4mm insect ingress protection. Smallest acoustic window vents on the market. Installing a background ventilator through a wall that provides the equivalent areas described in Approved Document F, volume 1 can be an. £3. Colour. Acoustically damped pipe fitted around unit to reduce external sources of noise such as traffic. It features a thermal foam seal, rod control operation and also comes with a 10 year guarantee. Renson Waves is the first fully automated local ventilation unit with a humidity, VOC and (optional) CO 2 sensor. The SM 1200 is a high performance surface mounted window vent that achieves a sound reduction of up to 43 db Dnt Rw in the closed position. Ventilation systems. Spent ages reading about it and it seems that they make a huge difference in terms of noise. 4080mm² measured area 2500mm² Equivalent Area. Addition of a wet room to an existing building:. 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. 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. New higher equivalent area confirmed by the BRE. 16 years ago. The problem I'm having is I can hear everything outside, from neighbours talking to cars passing. Designed to improve natural ventilation in the home, trickle vents have often proved unpopular with homeowners because they can spoil a window’s aesthetic appeal. Special paint finishes available for trickle vents; Based on successful Trimvent® principle; Deflects air up and down; Thermally insulated; Matching screw covers;. Trickle Vents are designed to provide fresh air ventilation for improved in-home air quality while the window remains closed and secure. The VELFAC acoustic trickle vent ensures both fresh air and noise reduction when combined with VELFAC SOUND windows. Acoustic trickle vents: noise-reducing acoustic vents are also available for external windows, facilitating the flow of air in and out of a building, while helping to prevent the ingress of external noise. V. This SlimVent & 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 Regulations Approved Document F in England and Wales, and the Scottish Building Regulations October 2011 Standard 3. Choice of finish. The ventilator has been designed with upward air deflection to eliminate replacement air. Wind noise blowing across the vents if ours are anything to go by. Fixing holes in the frame and cover caps. Glidevale TVES4dB Acoustic Energy Saver Humidity Sensitive Trickle Vent – BIM Object Download. Core drilled – suitable for retrofit installations. Polish brass. Although this vent supports compliance, we would urge you to read our handy guide before you purchase which summarises the new requirements. Inc. The SF Xtra Sound Attenuator ventilator is part of Titon’s SF Xtra range – and is already being widely specified throughout the UK by housebuilders and developers. The new 2500EA and 5000EA acoustic window ventilators from Greenwood Airvac make ‘sound’ new additions to the Window Ware range. The debate around trickle vents today has been as strong as ever, with questions still being asked about compliance, who is liable and help being sought from various industry bodies. BV, BV - TV. 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. Ducting & Terminals. As expected, the standard vent was not very successful in keeping out noise. This is issued following detailed assessments as to compliance with building regulations. Unfortunately, opening windows or doors can also let in unwanted noise. 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. RW Simon FV Acoustic Vent 400mm. We also offer the acoustic window trickle vent range in a selection of anodised finishes. Air Leakage – 0. Sometimes the best way to achieve the best acoustic performance in new build applications is to upgrade from a traditional ventilation strategy, e. ventilation (Glidevale acoustic low profile vent *TVALdB450/800) to achieve up to *40/42dB Dn,e,w sound reduction. hello@brookvent. Add to basket. CLOSED. AirLiner: Extends from. 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. 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. The Easyvent 3000 white trickle vent is made from Acrylonitrile Styrene Acrylate (ASA), a much tougher and durable plastic than PVC. Mantis 3. WHITE 400mm Trickle vents from just £3. Acoustic STC – open 32dB – closed 43dB. Table 3. The honeycomb grill is designed to filter out unwanted airborne debris. Snap on cover panel. All Glidevale Trickle Ventilators have been tested to meet the building regulations. Directs airflow upwards avoiding draughts and discomfort. ukA time served trickle ventilator found on most double glazed windows. 79. Replacement windows should be fitted with trickle vents regardless of whether the windows being replaced had vents in them or not, if no background ventilation alternative is being installed. Ex. Trickle vents are activated with a single finger and provides passive. The Invisivent ® Air and Comfort window vents by Renson ® are controlled by the smart Healthbox 3. Titon says it has maintained its position as the industry leader through constant research and product development, ensuring the company is still. Core features include: The SM. by Renson Fabrications. co. [email protected] and specify trickle vents from top manufacturers with NBS Source. Acoustic trickle vents I am in a new build house (4 years old) and I am looking to improve the soundporoofing to the front of the house. Made of aluminium with ABS end caps. Trickle Vents by "Greenwood" we have these vents available in various colours and sizes. Those fitted to the frame are known as slot vents, and those between the glass and frame glazed-in-vent. A trickle vent is a device usually fitted at the top of a window that allows fresh air to circulate naturally through a room, and allows polluted air out. 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. £79. We explain what trickle vents are, why you need them, and how to choose products with a. Ideal for both timber and PVCu, the Framevent has been specifically developed for the volume market. TAL4H&M- '9x3' Acoustic AirLiner® Set with Hit & Miss Ventilator (Up to 39dB Dn,e,w) Controllable air vent for background room ventilation. (54 products) An air vent is a space generally in a wall, which allows air to pass through and installing air vents helps to promote this air flow. Since 1936, Vent-Axia has been manufacturing a large range of efficient ventilation products helping improve indoor air quality in homes & commercial buildings. D Vent. Ex. The debate around trickle vents today has been as strong as ever, with questions still being asked about compliance, who is liable and help being sought from various industry bodies. 894 The Crescent, Colchester CO4 9YQ United Kingdom. The ‘p’ (projection) dimension of each can vary depending on if it is open or closed. Greenwood Acoustic window ventilator (White ) Quantity. aircycle 3. They're easy to install, cost effective, unobtrusive and easily operated by the occupant. For use on timber and upvc windows and doors. The VELFAC acoustic trickle vent ensures both fresh air and noise reduction when combined with VELFAC SOUND windows. 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. Acoustic trickle vents: noise-reducing acoustic vents are also available for external windows, facilitating the flow of air in and out of a building, while helping to prevent the ingress of external noise. 2500EA routing slot size: 192 x 13mm. Surface mounted and screw fixed to the frame these window vents are great for general replacement where window vents are broken or missing. test – a standard Titon slot vent and a so-called ‘acoustic’ slot vent. The. Technical Service: 01276 408402. V. Any cooling of the internal temperature in winter from a trickle vent is marginal. Product Opening in Vent Slot Size Equivalent Air-flowframe/sash Dimensions. 60. Meets World Health Organisation recommended reduction of 33dB. The latest addition to the Simon acoustic range. Single/Multipack. RW Simon Trickle Vents. Glidevale ALDB Acoustic Trickle Ventilator 8000mm. AAC125HPCWL. 595mm trickle vent available in white only. . Background Ventilation is a key product for a healthy living environment. 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. Resources. £395. Acoustic Vents EAR42W: Fresh air in or out – no noise. 4. 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. About Window Ventilation Our full range of high performance window ventilation includes AIRSTRIP “Glazed-In” Ventilators, Through Frame Trickle Ventilators, Acoustic Trickle Ventilators and Vent-A-Matic provide. 2mm if you want the exact measurement). VAT. comOptional SoundOUT sound diffuser box can be fitted to minimise the transfer of noise through the vent. 0800 970 4190. An alternative is to install acoustic trickle vents. The 13/16” dimensions are always constant; therefore the body length is always 1-5/8” shorter than the overall length. It is the shortest vent available to provide 5000mm² EA. Energy saving, reduces over ventilating. Connect with us Social Media. Ultra Vent and Grille. VAT. 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. The Acoustic Purge Fan is specially treated with acoustic foam to reduce breakout and induct noise, ensuring end-user comfort during operation. Can be removed to allow access to and maintenance of device. Browse 10 free BIM objects and Revit families that are ready to use on your projects. Suitable For. FREE DELIVERY on. Platinum 3 Star Euro Profile Cylinder. For effective ventilation, our Rose Collection sash windows are available with trickle vents fitted to the top of the sash. The acoustic trickle vent achieves a sound reduction value without compromising internal ventilation. Ventilation can be provided through any appropriate means. New building regs for future homes 2025 in new builds will not have them, further more they will be trippled glazed. The Freshvent has 2700 mm² equivalent area. Aluminium Trickle Vents. A trickle vent is also included. Greenwood 2500EA/5000EA Slotvent. WHITE 400mm Trickle vents from just £3. This is due to sound reduction levels being measured differently for trickle ventilators when compared to windows. Duco Acoustic Ventilators. CLOSED. Most importantly, it influences the health of those who live and work in the building. Manufactured from PVC. Q. Internal hit & miss grille manually adjusted with an easy sliding. Provides acoustic attenuation to Dn,e,w 55dB (A) 2500mm2 equivalent area performance. RW Simon FV Acoustic Vent 400mm 2500EA . timber or woodaluminiumclad window systems. stabilised UPVc. Then simply cut a. 5000 mm2. Trickle vents must be left in the ‘open’ position to provide ventilation; Bear in mind that with uncontrolled ventilation, moist air and odours are spread around the home, often condensing in, or on, the fabric of the building. These pared-down pieces of kit (measuring between 412mm and 250mm) are the smallest acoustic window vents on the market, yet they offer unbeatable noise-reduction (up to 45dB) and impressive. Our acoustic window vents range features a comprehensive selection of acoustic solutions. We chose the LookRyt AirCore product to deliver our ventilation requirements because it achieved the performance characteristics required, whilst also being the most aesthetically pleasing product we could find. The Static Vent-A-Matic models (except PB) come equipped with an integral stormaguard as standard, to help reduce draughts. 2500mm2 EA and 5000mm2 EA versions available. Glazpart has taken trickle vents to a whole new level with the Link Vent Mk2 5000! It boasts a compact, low-visibility design with a. The benefits of a higher performing acoustic ventLearn more: ht. Then simply cut a space in the foam to glue each panel in. At the FITSHOW 2013, we launch the first of the “Link Vent” range of patent applied for trickle ventilators. Quantity. Add to Wishlist. 2500EA. 70 . This is particularly important in areas where this is more likely to happen, including. The best acoustic attenuation reached so far by a trickle vent is the effect of combining our reliable Ventair TRDn controller with a two-stage acoustic attenuator installed in our Ventair Akustik air intake. 2060 (1) 2200 (1) 2500 (2) 4000 (2) 4300 (1)Trickle Vents by Greenwood are available in various styles & Sizes Starting from 4. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. 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. BV, BV - TV. Window Ventilation;Configurations and results. 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 3470Our elegantly crafted trickle vents for casement windows come in a range of sizes, styles and colour options meaning there is something to suit every form of window. Unfortunately, there’s no hiding the fact that they can look unsightly. Granada can install an acoustic trickle vent which has been specifically designed to aid air circulation whilst preventing noise waves passing through it. Summary 1. Nineteen different Trickle Vents are reviewed from some of the performance aspects in this paper. Click & Collect. 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. It also features 3 different airflow modes and an insect grille to keep unwanted guests out whilst letting fresh air in, as well as a 5 year manufacturer’s guarantee. Requirements . Suitable for bedrooms and other rooms where low. Do trickle vents let in noise? So trickle vents are terrible for noise intrusion, look ugly and let the heat out. 79. 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. Whilst trickle vents are published with acoustic values this can often be misleading due to the criteria on which they are valued. As the name suggests, these are trickle vents with added insulation. £7. If you had a window with trickle vents, and you are replacing it, you need to replace like for like. Available Colors: The overall vent length. Acoustic Information (31) User Guides (47) Fault Finding (13) Calculators (1) Test Results (36) URL (8) Manuals and Documentation (Obsolete) (35). Surface mounted noise reducing acoustic trickle vent. redeem. The major design criteria of Trickle Vents are ventilation capacity, controllability, actuation, thermal insulation, air permeability, water tightness, climatic adaptation, security, and acoustic. Trickle vents quietly create a healthy environment for your home and family. also available as 5000EA - 412mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) External. Generally, to gain maximum performance, the size of the acoustic attenuator should be mirrored on the vent and canopy; and. 18,395. Butt hinges. VAT) Plastic trickle vents with fingertip vent adjustment. tr ickle vents but those on the noisy façade will need acoustic trickle vents (AVO paragrap h B. Energy efficient, minimise heat loss. Classification Pr_30_59_94_90. 16 ex. Automatic, no user input. Framevent PVCu Ventilator. They are there for a reason taping them up will only cause issues elsewhere. Yeah, it might be the same mechanism as what they use for mufflers (in which you have a. uk info@titon. The available models differ in acoustic insulation levels (35, 38, 40 and 42 dB). Trickle vents also work in conjunction. The Acoustic Energy Saver Humidity Sensitive (TVES4dB) and the Acoustic Low Profile (TVALdB450 and (TVALdB800) reduce sound travelling through the vent, whilst allowing ventilation into the property. I spoke to a window company about their acoustic glazing range. The Freshvent has 2700 mm² equivalent area. Acoustic Trickle Ventilators. Went to a neighbour who had new stuff put in a cpl years with acoustic lamination and it was perfect - virtually completely silent. It will end up oozing out and coming down the frames/glass. Schüco VentoLife is suitable for residential and office buildings and can be integrated not only in the Schüco AWS 50 to AWS 75 SI+ series including AWS BS. The question is usually followed by a silence as the customer thinks about what they already have. Ventilation can be provided through any appropriate means. The unit has three fixed trickle speeds of 6l/s, 7l/s or 8l/s and two fixed boost speeds of 13l/s. 89. EN. Air Vents. Advice on Trickle Vents on New House UPVC Windows. Trickle Vents are an excellent way to allow air flow and ventilation without the issue of dust, dirt, and insects. VAT. BIM object . Performance required. Fixing holes in the frame and cover caps. The RW Simon Ltd TTF Slimline window trickle ventilator is a through frame trickle ventilator that is a robust, yet stylish aluminium ventilator. Trickle facility to allow air ingress even when closed. Stocking part F compliant window trickle vents from brands like Glazpart, Greenwood & RW Simon. AIRSTRIP “Glazed-In” Ventilators. 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. Vent-Axia Acoustic Solution - Edition 1. The new regulations in regards to trickle vents just seems very backwards. Not Suitable for Use with Gas Appliances. model has been specifically developed for use with rigid. Contact our team today. 13/09/2017. *£95 ex. -Hardware : Locking espagnolette. Most importantly, it influences the health of those who live and work in the building. . 8W/m 2 K for triple glazing Environmentally conscious design - from FSC-certified wood to 93 per cent recyclable window units Versatile ventilation - combine different opening functions, trickle vents and louvres or specify sensor controlled unitstest – a standard Titon slot vent and a so-called ‘acoustic’ slot vent. 62,Topcashback: £177. 3. The kitchen has an extractor vent , also a vent for the boiler and trickle vents on the double glazed windows. Happy trickle vent day! As of today, June 15th 2022, the newly revised Building Regulations for England have come into force. GREENWOOD ACOUSTIC 5000EAW. Ironically, the spare bedroom (which faces a railway line) has acoustic vents through the wall rather than trickle vents through the window frames and it is. ago. There are many variables to consider in acoustic testing, please contact us for specific test figures on our range of trickle. 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. We also offer the acoustic window trickle vent range in a selection of anodised finishes. New building regs for future homes 2025 in new builds will not have them, further more they will be trippled glazed. Sign up to our Newsletter. Sunny Sussex. This can be fiddly so it may be easier to cover the whole inside with acoustic foam before you start adding in the panels. The aesthetically pleasing and patented design helps to reduce the visibility of the trickle vent on a window. Skip to content +44 (0) 1732 850770 projects@passivent. Environmental Noise Assessment K. 1. Downloads. *much* quieter than the master bed. Flush fit | White ABS Plastic | 430mm long x 20mm wide x 10mm deep (4,000 mm 2 free area). Our Products. Glidevale Fresh 99H Humidity Sensitive Wall Vent – BIM Object. Q. The acoustic vent is installed into a timber packer, which is fitted and sealed on site and can achieve a sound reduction value of Dn,e,w (C; Ctr) = 40 (-1; -2) dB, and an equivalent free opening of 2868mm². To help you find the right products for your needs, all our ranges are. W. 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. Trickle vents are not required. It is the shortest vent available to provide 5000mm² EA. Our aluminium vents (look for the reference VAL) have thermal seals to stop draughts when closed. Titon Hardware Ltd. £7. All Glidevale Trickle Ventilators have been tested to meet the building regulations. Density planning and brownfield development means new dwellings located close to busy roads . Stainless Steel Door Handle . About Window Ventilation Our full range of high performance window ventilation includes AIRSTRIP “Glazed-In” Ventilators, Through Frame Trickle Ventilators, Acoustic Trickle Ventilators and Vent-A-Matic provide options. Features a slim line design with two stage opening with the benefits of sound insulation. Passivent are specialists in delivering natural ventilation and daylight solutions and a leading UK company in the field of sustainable and energy efficient solutions. 6 cfm @ 1. We specified a mix of double and triple glazing across the build, and also installed both standard VELFAC vents (concealed within the. 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. 1. Trickle vents will help avoid problems associated with poor ventilation in naturally ventilated spaces, including reduced risk of condensation, avoided over ventilation. 250-368mm L with air brick fitted. Our trickle ventilator products are available for delivery as. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR. Titon Hardware Ltd. Ventilation systems. Ventilation building regulations have recently changed in England and Wales. Slimline vent design has clever two stage opening. 07 Jan. For example, if a window with a sound reduction of 35dB is used in conjunction with a background ventilator also giving a reduction of 35dB, the overall decrease will be somewhat less than 35dB. Trickle vent with acoustic damping. Single. One of the best performing acoustic vents available in the UK. Equivalent area: 14,427–34,032 mm²/m. VAT. 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. No projection when closed. 5mm (5000EA) 438mm (5000EA) Illustrations show 2500EA version SF Xtra Sound Attenuator Vent Fixing and Operating Instructions BM504 Iss. VAT. Acoustic trickle vent. Glazing or infill -Standard : Glazing to BS 6206. 5000mm² Equivalent Area Performance from the smallest vent at 410mm long High levels of background ventilation are required when applying System 1 of the Building Regulations in new dwellings; Intermittent Extract Ventilation and Background vents e. Vent-Trex is ideal for refurbishment situations where wall penetration is undesirable, as it does not damage the fabric of the building or where external aesthetics need to be preserved. R. Nothing stopping you from. Our 3. Size Name: 4000EA. Place metal, plastic, foam, or cardboard attic baffles. They are commonly operated by opening or closing a flap depending on the need for ventilation. As expected, the standard vent was not very successful in keeping out noise. We have a range of products, from basic slot vents, which could perform satisfactorily in certain situations (all of our main ranges have been tested acoustically), through dedicated acoustic trickle vents, to mechanical. 9 Feb 2017. Adding secondary glazing means sound must travel through another layer of glass and air space between, helping to diminish its energy and improve sound proofing. Don't want to block it all together. Choice of slot size. Enjoy fresh air indoors with window vents. Environmental Noise Assessment K. The new slim-line. Trickle Vents BPD Store stocks Passivent’s range of window tricklevents. It can be fitted with an XC13 canopy or GS22 grille. Titon SF Xtra 13 Vent 465 x 23mm - White. £2. Surface mounted window vents are specifically designed to operate in conjunction with a routered airflow slot through the frame or sash. Enquire now, call 01805 623721. Replacement Locks. co. Glazpart MK2 Link Vents - Singles 454mm 5049EA. Vent-Axia Sentinel Apex Brochure - Edition 1. Window Vents. This is a type of acoustic soundproofing. As I type this. VAT. Product Range: Ask us about secondary glazing todayVent-Trex is a unique combined overhead extract fan and trickle ventilator for kitchens and bathrooms that fits within the aperture on top of the window frame. The primary purpose of trickle ventilation is to remove polluted indoor air from a building and replace it with ’Fresh’outside air. Concealed and surface-mounted. Our doors retain a uniform appearance, whether they open or. Window vents let the heat out. When. 8,400mm² (84cm²) equivalent area. Visit our website now. Between the two rooms is a sound damping wall to prevent any. Your Price Apply / Login. Product Type. g. SM Ultima 2960 mm2 EA. uk info@titon. The acoustic attenuators come in three sizes; 25mm, 50mm and 75mm, which provide different dB reductions. External canopy grille (Glidevale Ultravent Grille, supplied separately) provides weather and 4mm insect ingress protection. Discover more. The offer includes the following colour versions: white, anthracite, grey, chestnut and oak. Our window vents are subtly integrated into your façade — and their acoustic damping comes as a bonus. Performance for the various elements is as follows; Table 2 - Facade element example performance Element Octave Band Frequency (Hz) Noise Level 125 250 500 1000 2000 4000 (dBA) Trickle Vent 373635 34 32 Product Type. Adding secondary glazing means sound must travel through another layer of glass and air space between, helping to diminish its energy and improve sound proofing.