Acoustic trickle vent. Our aluminium vents (look for the reference VAL) have thermal seals to stop draughts when closed. Acoustic trickle vent

 
 Our aluminium vents (look for the reference VAL) have thermal seals to stop draughts when closedAcoustic trickle vent  BV, BV - TV

The Simon Framevent HF & HF + tricklevent range have been designed to help comply with. 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. Acoustic measurements are carried out in purpose built test chambers, with a source and receiving room, both being isolated from the floor and ceiling. Passivent’s Soundscoop acoustic air transfer unit also combines crossflow ventilation with exceptional acoustic attenuation. NBS Source. Trickle vents ruin any acoustic performance gains. . 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. Modularity of acoustic sets provides fl exibility for installation and acoustic performance. A trickle vent such as might be used in association with commercial windows is formed from PVC tubing in two convoluted paths. bulk or standard packed (as sets or separate internal ventilators & external grills) mix and match colours. WHITE 400mm Trickle vents from just £3. Product Code: 12674. W. CLOSED. EN. Trickle Ventilators Titon manufactures and supplies window and door. Take some 3M spray adhesive and apply it to the flat side of one of the acoustic foam pieces. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. It’s an awful solution to a very really problem. The purpose of trickle ventilators is providing a consistent flow of fresh air. An alternative is to install acoustic trickle vents. AWS Trickle Vent system automatically adjusts the size of the ventilation inlet as ambient temperature changes. ukA time served trickle ventilator found on most double glazed windows. Glidevale ALDB Acoustic Trickle Ventilator 4500mm Add to Basket. 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. Connect with us Social Media. 'usually' trickle vents in upvc/alu are 'in frame' as shown below (its the horizontal bar on the top of the frame)Morris Homes Midlands had a specific requirement to deliver acoustic insulation and ventilation at our site in Swadlincote. From manufacturing the first dMEV classified product in the UK in 2007 to our latest release aligned to the 2021 UK Building Regulations, our approach has always been set on delivering a low-energy performance product which. Range includes: Standard through frame. Surface mounted slot. Add to Wishlist. 2500mm2 EA and 5000mm2 EA versions available. Surface mounted noise reducing acoustic trickle vent. Trickle vent with acoustic damping. Titon says it has maintained its position as the industry leader through constant research and product development, ensuring the company is still. 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. Helps to prevent mould and mildew. favorite_border. Can be installed in internal wall constructions of between 100mm and 150mm. Window vents let the heat out. TTF Slimline Ventilator. Having recently moved into a new build apartment, the noise through the trickle vents in the bedroom window is driving me mad. Recesses over a 16mm slot. Other finishes available depending on quantity. Buy Now. Framevent PVCu Ventilator. Background ventilation can be provided by trickle. Product face sheet. Suitable for bedrooms and other rooms where low. The Trickle Vent, Schüco VentoLife is an air purification device with a multistage filter which removes from the air up to 99. Features and benefits. Over Frame Design: When it is not possible to fit the trickle vent through the. Energy efficient, minimise heat loss. Four intermediate settings. We specified a mix of double and triple glazing across the build, and also installed both standard VELFAC vents (concealed within the. Natural daylight, as well as natural ventilation, are recognised factors in improving the wellbeing of a building’s occupants. The Freshvent has 2700 mm² equivalent area. 4080mm² measured area 2500mm² Equivalent Area. 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. As expected, the standard vent was not very successful in keeping out noise. Units comprise of an aluminium outer frame joined to a seasoned hardwood timber surround. Substantial sound reduction of up to 39dB Dn,e,w. 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*. Available Finishes. Air Leakage – 0. Click & Collect. Although this vent supports compliance, we would urge you to read our handy guide before you purchase which summarises the new requirements. RW Simon FV Acoustic Vent 400mm 2500EA . 2500mm2 EA. Meets World Health Organisation recommended reduction of 33dB. 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. Features a slim line design with two stage opening with the benefits of sound insulation. EAQ42W is an acoustic window vent suitable for new build and refurbishment and can be applied to most window profiles with add on sections. Map Vent Fixed Louvre Vent with Flyscreen White 229mm x 229mm (8886D) (58) compare. Finish (inner and outer). Share. Greenwood Acoustic 2500EAW. They are opened and closed manually. Installing a background ventilator through a wall that provides the equivalent areas described in Approved Document F, volume 1 can be an. Please make any allowances for fittings beads, gaskets etc, or for manufacturing tolerances. Acoustic Duct Versions. Our 3. Colour Name: White. Trickle vents also work in conjunction. RRP from £34. 595mm trickle vent available in white only. 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. mechanical ventilation and passive trickle ventilation. Suffix product code with:-020 (white), -001 (SAA. #1. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR. Specifically developed to improve indoor air quality requirements throughout North America and the Rest of the World. Trickle ventilators are typically manually maintained slots integrated into window frames. External grille provides weather protection and insect ingress. Environmental Noise Assessment K. Overview;. *much* quieter than the master bed. 04 psf (Vent and Canopy only) Water Resistance – in excess of 12. Q. Internal Trickle Vent made from high quality 0. A trickle vent above a French door is small and narrow in comparison. View details. 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. Secondary glazing does not need trickle vents which improves the acoustic performance. This product is equally suitable for domestic and non-domestic applications. 85 +VAT. - Aluminium profiles with Plastic endcaps. There is so. A range of eight models from 100 to 315mm dia. 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. Compare that to our old trickle vent that was 23mm, that’s just over 90% thinner. Acoustic trickle vent. They're easy to install, cost effective, unobtrusive and easily operated by the occupant. Glazpart MK2 Link Vents - Singles 236mm 2500EA. Download. Surface mounted window vents are specifically designed to operate in conjunction with a routered airflow slot through the frame or sash. The latest addition to the Simon Acoustic Range - Please get in contact for more. Surface mounted noise reducing acoustic trickle vent. For many homeowners,Construction Industry Professional, Yoga Teacher and Life Enthusiast Report this post Report ReportThe trickle vent areas indicated in ADF to provide whole dwelling ventilation rates are based on calculated air. Enquire. 5 2 ratings. The honeycomb grill is designed to filter out unwanted airborne debris. 1. Designed for new builds, the DMEVe 100mm is recognised in SAP PDCB, NHBC and STAS approved. WHITE 400mm Trickle vents from just £3. With window vents, you can ensure a constant and natural supply of fresh air into your home through dry rooms such as living rooms and bedrooms. SilentFiber™ Acoustic Duct Liner designed to be applied to interior surfaces of sheet metal ductwork for air conditioning, heating and cooling systems in residential and commercial. Resources. As ventilation specialists, we are also proud to supply. 57 Ex. Acoustic test data available upon request. It features a thermal foam seal and can be supplied in bar length. Trickle facility to allow air ingress even when closed. Trickle Vents are an excellent way to allow air flow and ventilation without the issue of dust, dirt, and insects. RW Simon Ltd have launched a range of acoustic ventilators to assist clients in creating a satisfactory solution for all their acoustic requirements. 4080mm² measured area 2500mm² Equivalent Area. 497mm (5000EA) 215mm (5000EA) 173. Lockable restrictor (160mm or 270mm) Click vent. Features Substantial sound reduction up to 50dB Dn,e,w. 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. £79. RW Simon Framevent 795mm 5000EA . 6300mm². Additionally, they help remove stale air from the property, which is very helpful if there are any odours lingering in your home. 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. 13/09/2017. Recently organised window fittings at a relatives house. 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. If your property is near a busy road, railway or airport, trickle vents can be designed with a high-performance acoustic option to reduce noise. Inc. Will help to reduce condensation. Addition of a wet room to an existing building:. However, the changes will not apply in relation to building work where a building. Designed for new builds, the DMEVe 100mm is recognised in SAP PDCB, NHBC and STAS approved. Achieves Building Regulations’ EA requirements. Satin Brass. A trickle vent is also included. If your property is near a busy road, railway or airport, trickle vents can be designed with a high-performance acoustic option to reduce noise. Well, unless you have things in place to 'block' it, you will probably find that as it expands it won't just stay in the trickle vent. We also offer the acoustic window trickle vent range in a selection of anodised finishes. PAGE 1 OF 3. Your Price Apply / Login. W x H x D: 258 x 240 x 8mm. Acoustic trickle vents often involve totally different window frames or bolt on additional sections, I'd be surprised if. Automated control of differential pressure provides your house with a proper volume of air and, in addition, considerably reduces thermal. Colour. 9 February 2017 at 8:58PM. R. This is more representative of a design in the UK that relies on trickle vents for a natural ventilation solution. Butt hinges. Explore our product database and get technical information on VELFAC product ranges - including open features, accessories and more. 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. This is a type of acoustic soundproofing. Nineteen different Trickle Vents are reviewed from some of the performance aspects in this paper. Acoustic performance tests by BRE Acoustics. The ‘p’ (projection) dimension of each can vary depending on if it is open or closed. Trickle ventilators (or trickle vents) provide this effective background ventilation for a home, contributing to a healthy living environment by enabling unobtrusive and controllable whole-room ventilation. Nothing stopping you from. MVHR Filters. Ideal for both timber and PVCu, the Framevent has been specifically developed for the volume market. Summary 1. The XS13 is a direct replacement for the S13 range, using the same slot measurements but offering a much greater. Choice of unit size. New higher equivalent area confirmed by the BRE. SCHÜCO BY GSW VENTILATION VENT AWS VV. 5. 6 cfm @ 1. (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. 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. Enjoy fresh air indoors with window vents. The Static Vent-A-Matic models (except PB) come equipped with an integral stormaguard as standard, to help reduce draughts. 0800 970 4190. Available in white or brown. Buy Now. Manufactured in the highest quality U. 400mm. Rytons Acoustic Vents. We had the double glazing firm come out that fitted the windows for something else so I. They are also necessary in Patio doors and French doors, if they are the only apertures in the room. Acoustic ventilation options such as acoustic trickle ventilators or MVHR which require very few. Reduces sound by 45 dB with internal grille fully open and 50 dB when closed (Dn,e,w). g in bedrooms, or living rooms, require 2 vents). Lockable restrictor (160mm or 270mm) Click vent. 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. Now imagine a larger size installation that may require 20 of them. Note: this will consist of 4 x 300mm section with 2 centre joining pieces. Ventilating buildings is about more than just the exchange of air. 0800 970 4190. The Acoustic Purge Fan is specially treated with acoustic foam to reduce breakout and induct noise, ensuring end-user comfort during operation. This can be fiddly so it may be easier to cover the whole inside with acoustic foam before you start adding in the panels. Then simply cut a space in the foam to glue each panel in. blackthornjohn • 6 mo. 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. . Replacement Locks. acoustic result. 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. Suitable for external wall thicknesses of 140mm and above. We also offer the acoustic window trickle vent range in a selection of anodised finishes. The acoustic trickle vent achieves a sound reduction value without compromising internal ventilation. Where high acoustic performance is required trickle vents should be avoided as they will have a detrimental effect. Bulk Save - View Offer. The Airvent SM Ultima is a quality, surface mounted ABS acoustic window vent providing 40db sound reduction. Existing homes. Background Ventilation is a key product for a healthy living environment. Granada can install an acoustic trickle vent which has been specifically designed to aid air circulation whilst preventing noise waves passing through it. Yale Trickle Ventilators - Yale UK. It features a thermal foam seal, rod control operation and also comes with a 10 year guarantee. The Simon 19000 Acoustic is a thermally broken glazed-in ventilator that incorporates all the features of the standard Airstrip 19000 and achieves a sound reduction of up to 44dB open. by Renson Fabrications. The range was developed to meet increased regulation requirements for sound reduction, and the increased noise exposure resulting from the. Trickle Vents - Flush Fit (White - 430mm) £ 9. The problem I'm having is I can hear everything outside, from neighbours talking to cars passing. VAT. SM Ultima 2960 mm2 EA. 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. These small trickle ventilators are designed to deliver controllable whole room ventilation. Espagnolette with lock. For 45 years, Titon says its core product has been the window trickle (or ‘background’) ventilator, claiming to be the biggest manufacturer and supplier of these products in the UK. 50 a set, conform to Building regulations. 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. What was surprising was the result of testing the ‘acoustic’ slot vent, for which a 35dB reduction was claimed. With window vents, you can ensure a constant and natural supply of fresh air into your home through dry rooms such as living rooms and bedrooms. Up to 40 db Dne W. Downloads. redeem. 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. Download. A trickle vent is a device that allows fresh air to circulate naturally through a room and allow polluted air out. Trickle vents are not required. Take advantage of the wide range of Brookvent products!The acoustic Trickle Vents can also be powder coated to any standard RAL colour. BV, BV - TV. Trickle Vents are designed to provide fresh air ventilation for improved in-home air quality while the window remains closed and secure. 5. 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. Internal baffle reduces light and draughts. Rytons are the leaders in vents for all applications and their acoustic performance is second to none. View. Greenwood 2500EA/5000EA Slotvent. Polish brass. FREE DELIVERY on. Our largest vent, the TVALdB800, is capable of sound reduction up to 42dB Dn,e,w. The SM 1000+ is a slim, unobtrusive surface mounted window vent that offers trickle ventilation. Resources. also available as 5000EA - 412mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) External. Glidevale ALDB Acoustic Trickle Ventilator 8000mm. Donald BSc (Hons) AMIOA T: 0330 043 1764 Page 4 of 24 1. Burglar-proof performance is desired in some cases. The Freshvent has 2700 mm² equivalent area. One or more expansion chambers are provided at turns or directional changes within the tubing which reduce or eliminate noise transmission through the vent. Your Price Apply / Login. The Amendment Regulations and accompanying Approved Documents F: Volumes 1 and 2 come into force on 15 June 2022. Your Price Apply / Login. Product face sheet. - Enables secure, weather resistant ventilation with exclusion of insects. Acoustic Vents; Glazed in Vents. 57 Ex. • 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. Waves is the ideal solution if, for practical reasons, a centralised ventilation system is not possible. D n,e,w (C;Ctr) – Open position. Dramatically reduce installation time with an this slimline slotvent with an innovative clip-fitTrickle vent with acoustic damping. Bi-Fold Door Hardware. Our extensive range and comprehensive support will provide you with a solution for any housing project. Air Brick: Terracotta, buff/sand, white, grey, blue/black, black, brown. 79 inc VAT. Condensation reduction; If your home has a problem with. External canopy grille (Glidevale Ultravent Grille, supplied separately) provides weather and 4mm insect ingress protection. Background - usually provided by trickle vents installed within a window frame ; Purge - either natural (by opening a door or window) or mechanical . of equivalent area ventilation and acoustic noise reduction. 9 millimetre material. A decentralised Mechanical Extract Ventilation (d-MEV) system is a low energy, continuous mechanical extract ventilation system designed to draw. The question is usually followed by a silence as the customer thinks about what they already have. Available in white and supplied with D Vent for inner vent installation. Restrictor with ventilation position. test – a standard Titon slot vent and a so-called ‘acoustic’ slot vent. Internal and external grilles U. g. Unfortunately, there’s no hiding the fact that they can look unsightly. stabilised. Note: this will consist of 4 x 300mm section with 2 centre joining pieces. 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. Buy Now. 1,394 posts. Aereco develops innovative ventilation solutions for residential and office buildings with a key concept: the modulation of airflow rates according to. 0 ventilation system to keep your home ventilated effectively and energy-efficiently. RW Simon FV Acoustic Vent 400mm 2500EA . Trickle facility to allow air ingress even when closed. Our 3. Water sewerage refund: £170. Stocking part F compliant window trickle vents from brands like Glazpart, Greenwood & RW Simon. Product Description. Suitable For. Discover how acoustic ventilation can improve indoor air quality and reduce noise pollution with Greenwood, the leading air ventilation system manufacturers in the UK. Features and benefits: Provides 5000mm² equivalent area from a single vent; Available in 2 sizes: This vent 5000EA - 412mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) ExternalTrickle ventilators. Learn More . Zehnder Group UK. Acoustic energy saver humidity sensitive ventAquwall HY acoustic trickle vents are designed to provide ventilation and fresh air through the window frame, while keeping windows shut and your home secure. Ventilation systems. R. Chrome plating. 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). Standard trickle vent. Established in 1958, R. In addition, acoustic vents can also help to improve the overall acoustic quality of a room by absorbing excess sound waves. 3. It can be locked in the minimum as well as maximum flow position. A trickle vent is also included. Our window vents are subtly integrated into your façade — and their acoustic damping comes as a bonus. Download. 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. Designed for a shutter style open and closing mechanism. UK Manufacturer of home mechanical ventilation systems and hardware for windows and doors, including handles, hinges, trickle vents and extract fans. The SF Xtra is factory-made to standard sizes. 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. They may be an excellent solution to cope with the current regulations but if the issue is noise, they can also. VAT. The self-regulating non-return valve prevents annoying chilly draughts, while the window vent itself is also designed for improved acoustic comfort. Size: 400mm (L) x 20mm (H) x 22mm (D) Achieves sound reduction of 40dB closed and 33dB open. The SF Xtra is factory-made to standard sizes. 400mm Tan and White Trickle Vents (internal and external fittings) £9. Acoustic lining reduces. Trickle vents are not required. Trickle Vents 01206 713801 sales@titon. Acoustic STC –TV250 Vent and Canopy – open 35dB – closed 49dB. Removable cover pannel conceals Ventient trickle ventilation unit. 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. Condensation ventilation is available in a variety of sizes for new build and refurbishment and Rytons acoustic background vents for walls have BRE measured equivalent areas and acoustic (Dn. Hi, I purchased a new build property during 2016, which came with double glazed windows and trickle vents. 5. Sign up to our Newsletter. Doing this will help further reduce echo. £59. Range includes: Standard through frame. RW Simon Ltd have launched a range of acoustic ventilators to assist clients in creating a satisfactory solution for all their acoustic requirements. £7. comOptional SoundOUT sound diffuser box can be fitted to minimise the transfer of noise through the vent. Acoustic Information (31) User Guides (47) Fault Finding (13) Calculators (1) Test Results (36) URL (8) Manuals and Documentation (Obsolete) (35). It can be locked in the minimum as well as maximum flow position. com TV Select S13 & TV Select Xtra XS13/XS16/XR16 Plastic slot ventilators Ò Suitable for PVCu, timber or aluminium. Sometimes the best way to achieve the best acoustic performance in new build applications is to upgrade from a traditional ventilation strategy, e. Acoustic trickle vent. Trickle Vents BPD Store stocks Passivent’s range of window tricklevents. As I type this. Here’s some useful advice on how to achieve compliance. The new acoustic vent is designed to provide both fresh air and noise control in buildings when combined with VELFAC SOUND windows. 62,Topcashback: £177. The ventilator has been designed with upward air deflection to eliminate replacement air. In response to the new. Ultra Vent and Grille; Energy saver humidity sensitive vent; Acoustic through frame. 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. For use on timber and upvc windows and doors. *much* quieter than the master bed. This is due to sound reduction levels being measured differently for trickle ventilators when compared to windows. Acoustic laminated glass; Sash Horns. All buildings have to be ventilated in order to maintain the health and well being of everyone using them. Lockmaster 21 . As the name suggests, these are trickle vents with added insulation. Tel:. Window Ventilation;Configurations and results. W x H x D: 260 x 90 x 7mm. 8 mm in the Enhanced range. 16 years ago. Mantis 4 . Greenwood Air Management are well-known for being first to market in the ventilation industry.