43* £0. Can be fitted to give updraft or down–draft. Black Trickle Vents. Posted on 18-10-2023 . 14. Air vents are usually installed within a wall to allow air to pass through, designed to promote air flow and improve ventilation. Window Trickle Vents are an easy and effective way to improve the air in your home. A robust smooth slim elegant rounded design. Posts navigation. Whether you’re looking for a full Trickle Vent, or just the Canopy Covers, we stock a range of products that when combined are sure to produce your optimal ventilation solution. Load More. 5. Available online only and not stocked in B&Q stores Write a review £ 8. Suitable for timber, UPVC and aluminium. Improve indoor air quality with our Continuous Extract Ventilation technology. Award Winning Service; Free Next Day Delivery* Order by 3:30pm; LoginThe Greenwood SF Vent is a discreet through-frame Slotvent that provides background ventilation in line with the requirements of the current Building Regulations ADF 2010. PVC –U and aluminium vents available. 43* £0. Suitable for PVCu, timber and aluminium windows & doors. Provides an outstanding Dn,e,w;42dB (A. Core drilled – suitable for retrofit installations. All products are suitable for use on aluminium, timber and PVCu. 95. RRP from £6. 00. Acoustic wall ventilator. Overall Width: 22mm. £1499. £24. FREE delivery Sun, 20 Aug on your first eligible order to UK or Ireland. Where To Buy This Product. UK Manufacturer of home ventilation systems and residential hardware for windows and doors, including handles, hinges, trickle vents and extract fans. Ideal for night ventilation without compromising security. Deflects air up or down, or both; option of complete closure. Your Price Apply / Login. Conforms to acoustic requirements of Noise Insulation Regulations 1975; one of only a small number of products available in the UK. 5-10-163. Greenwood ; R W Simon ; Colour / Finish. Details. 3 colour options; standard white, dark brown (mahogany), tan. Slotvent 4000. (1) 49 in stock. 3 colour options; standard white, dark brown (mahogany), tan. Trickle Vents allow you to have a small aperture in a window for a controlled amount of ventilation. Greenwood Trickle Vents No Trickle Vents CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Restrictors (M70) No #PST-ID:plain# Order Number Job No:- 596655 Frame Schedule Contract Number Delivery Date 27/01/2022 Customer Name VICA Customer Reference Ref:- 9481 (K) FarverGreenwood Trickle Vents No Trickle Vents CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Restrictors (M70) No Frame FR2 Style code 1. Find out how to easily retrofit a trickle vent to your door with our step by step video to guide you. 6. This is the Greenwood 2500EA trickle vent which is one of the smallest Slotvent on the market delivering 5000mm² equivalent area through one single unit. You may find they are on 'keyhole' holes in the middle (ie screws are put in the frame before the vent is attached), then the outside screws are put in to secure. £524. Choice of sizes available to suit any application. Available in a white colour. 99. Operation: Front faced finger lever to open and close. 4. The changes to Approved Documents F, L & O come into effect from the 15th June 2022. GEG Calculators is a comprehensive online platform that offers a wide range of calculators to cater to various needs. 5. GEGCalculators. GB DIY Store 5 x uPVC Window Trickle Slot Vent White 300mm White - Reduces Condensation, Damp & Steam (5 Pack) 73. One of the major benefits is that it can be installed in the same. Close X. Our 2500EA and the 5000EA equivalent area vents are the smallest acoustic window vents on the market and achieve the best acoustic performance for window ventilators in the UK - up to 45dB (A) It is a simple and adaptable solution for windows in residential dwellings that have external noise issues or planning restrictions. co. 82. Page 1 Unity CV3 (SELV) Decentralised Mechanical Extract Ventilation (dMEV) Installation and Operating Instructions The Unity CV3 is a continuously -running (dMEV) extract fan, designed to offer a simplistic approach to meet Building Regulations and provide an energy efficient domestic ventilation solution to improve indoor air quality in dwellings. This item: GREENWOOD S Vent - 4000S White. Our continuous running fans offer the lowest power consumption, minimal noise levels, and low life-cycle costs. Our easy to fit Greenwood Trickle vents can be fitted to windows or doors (Upvc or timber). Various colours available. 70 . Posted on 26-07-2023 . Show. a. Continuous running ventilation system (4 pages)Greenwood Airvac SF90T Extractor Fan 4" (100mm) Centrifuglal with run-on timer. Free. Your Price Apply / Login. a short cleaning tip on how to clean your trickle vents on windows, upvc window vents. 43* £0. SF Xtra Sound Attenuator vents, University of Strathclyde. Trickle Vents, known also as background ventilators, are natural ventilation devices which can be integrated into façades or window systems as an alternative to operable vents, specifically in high-rise buildings. Available in 3 sizes & a range of colours Can also be easily retrofitted to your existing windows to allow ventilation & prevent condensation. You’ll also find clear plastic window ventilators that fit directly into the glass. Providing up to 55dB reduction and suitable for wall thicknesses of 140mm and above. 300mm x 20mm ; 400mm x 20mm ; 795mm x 16. 0 (2) 45 in stock. Colour: Brown. favorite_border. The slimline design ensures an unobtrusive finish. 305mm (1) 400mm (1) Browse By. Acoustic trickle vents. Fully controllable ventilation that can be closed or tilted open to 30°, 60° or 90°. Showing 1-10 of 10 item (s) Trickle Vents by "Simon" we have these vents available in various colours and sizes. Manufactured from PVC. Greenwood’s trickle vents are open and close in a direct manner. Greenwood. R. In the closed position the slot trickle option provides. By installing trickle vents into your doors, you can ef. The Comfort series ventilation valve is used for the organization of air exchange in accordance with the Europe standards and guidelines DIN EN 1946-6, DIN EN 18017-3, EnEV 2009 and 2014, “Heating and ventilation in residential and public buildings” (absolute minimum 15 m3 / h per person). Call us: 08432 898 554 - 03432 898 554. 16 years ago. 8 Window system Matrix 70 Chamf Ver 1. the. Currency:. uk. 05 Ex Tax: £9. posted. Habitable rooms minimum 8000mm2. The external canopy provides excellent weather. Includes internal and external canopies which neatly cover routed slots to comply with building regulations internal canopy features front faced finger controlled lever to open and close vent as required. 5th extract point can be located at the bottom of the unit. Greenwood UPVC Trickle Slot Vent 5000EA 410 Long White. 37. Nineteen different Trickle Vents are reviewed from some of the performance aspects in this paper. Downloads. Avocet Inline Espag Upvc Window Lock Gearbox Mechanism 16mm Flat Rail Bar Rod. The Acoustic Window Trickle ventilation range offers a noise reduction of. Length 550mm. Find many great new & used options and get the best deals for Greenwood Window Vents 4000S 400mm long at the best online prices at eBay! Free shipping for many products!The range includes trickle vents with 2500, 4000 or 5000 equivalent areas (EA), the measure of aerodynamic performance of the ventilator and the measurement specified in building regulations. This is the Greenwood 2500EA trickle vent which is one of the smallest Slotvent on the market delivering 5000mm² equivalent area through one single unit. Trickle Vents. Slim, unobtrusive finish. Each Vent Provides 2000mm2 of free area ventilation when Installed in the window / door frame, head, add-on or sash. Greenwood Airvac provides a full design and quotation service and advises on suitable product Greenwood Trickle Vent F Vent Our easy to fit Greenwood Trickle vents can be fitted to windows or doors (Upvc or timber). Product Info. 00. Get it Wednesday, 22 Nov. Greenwood F Vents 383mm 2500EA . Greenwood UPVC Trickle Slot Vent 2500EA 250mm Long White. 5-10-1645 x 12mm. Vent sizes available: V25, V50, V75 and canopy sizes: C25, C50 and C75. These items are dispatched from and sold by different sellers. Greenwood Trickle Vents No Trickle Vents CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Restrictors (M70) No Frame FR2 Style code 2. Buy Trickle Vents online - this how-to guide we will be showing you how to replace a Titon Trimvent Select Tr. I have found a few online, Greenwood, Titon, Simon etc but the more I read the more confused I am getting. Can be fitted to give updraft or down–draft. Given that this is the minimum requirement for habitable rooms, Greenwood has developed the most compact single unit solution. Change. Greenwood F Vents 383mm 2500EA . Your Price Apply / Login. RW Simon 1. Greenwood SB Vents (Bottom Mounted Operation) 400mm 3200EA . Designed to be aesthetically pleasing and. Titon manufactures and supplies window and door hardware products ranging from background ventilators and window and door handles, to locking systems, hinges and restrictors. Buy Now. So once the outside screws are removed, push left or right to see if it is. 3 Window system Matrix 70 Sculpt Ver 1. Top-rated Plus seller. The system dilutes moisture in the air, which is then dispersed through trickle vents and natural ventilation leakage. White Titon Trickle Night Vent for Upvc & Timber Windows - S13 1700EA 267mm Long 2000mm². 2 Window system Matrix 70 Sculpt Ver 1. £16. VAT) Login to add this product to your wishlist. Achieves up to 2634mm 2 Equivalent Area (England & Wales) Bottom operation. 16" Mahogany Trickle Vent. Greenwood Humidity Control Vent (White ) Call us: 08432 898 554 - 03432 898 554. 5mm (H) x 23mm (D) Manufactured from PVC. Buy Now. Free Postage. Mr. It is available in a wide range of colours to match REHAU profiles, and the Link-vent 5000 closure plate is split to allow for 50% opening and further ease the. The cream 495mm vents Ral:9001 and the Ral:1015 are coated and can take from 7-18 working days before deliveryNew trickle vents are being launched to offer increased equivalent area air flow. EAQ42W is an acoustic window vent suitable for new build and refurbishment and can be applied to most window profiles with add on sections. Greenwood SB Vents (Bottom Mounted Operation) 305mm 2500EA . Greenwood Trickle Vent F Vent Our easy to fit Greenwood Trickle vents can be fitted to windows or doors (Upvc or timber). White Greenwood S Series Slot Vent. Using Our Jig. Fed up with condensation & mould? Then look at our range of trickle vents to fit to your windows, giving air flow & ventilation in your living space. 49. Learn More . Its design ensures controllable trickle ventilation in line with current. Window 5X Trickle Slot Vent 407mm Brown for uPVC Double Glazing & Timber Windows Reduces Condensation, Damp & Steam in Windows Fully Adjustable (5 Pack) 4. Key Stats; Available in two models offering 1600mm² and 3200mm² equivalent area (England & Wales) Available in two models offering 2000mm² and 4000mm² free area (Scotland)Stocking part F compliant window trickle vents from brands like Glazpart, Greenwood & RW Simon. 0 (3) 185 in stock. FREE delivery Wed, 4 Oct on your first eligible order to. Greenwood White 4000 Window Trickle Vent £ 8. Ultra-quiet running noise as low as 10dB on trickle speed,. Log In. Independently tested by Sound Research Laboratories in accordance with BSEN20140-10:1992, ISO140-10:1991. Compare Selected. Buy Now. RW Simon Ltd has an extensive range of Trickle Vents ranging in all different sizes to help achieve the amount of free area or equivalent area required to naturally ventilate a building in order to conform to building regulations, our range includes both UPVC and Aluminium. Features and benefits: Provides 2500mm² equivalent area from a single vent; Available in 2 sizes: This vent 2500EA - 250mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) ExternalFind Trickle Vents and Canopies in a variety of sizes, in addition to finishes that blend in seamlessly with both rustic and modern windows. Benefits & Installation. 5 x 341mm slot (including 15. Features: 4000 S vent with pullcord operation; Front mounted lever option also available; Achieves up to 3200mm² equivalent area (England & Wales) using 16mm rout height configuration; Vent size: 22mm (W) x 400mm (L) x 23mm (D)Trickle Vents by Greenwood are available in various styles & Sizes Starting from 4. Colour: White. Operation: Front faced finger lever to open and close. 1 Frame colour White Glass specification (1) Std Hurst T&G White Panel (Vertical) Glass specification (2) 28mm Unglazed Door operation Open OUT Handle. One of the best performing acoustic window ventilators available in the UK. 5. When choosing acoustic trickle vents, there are a few things you should keep in mind. These Greenwood trickle vents are designed to provide continuous effective ventilation, helping reduce mould and condensation. The F Vent is a slimline through frame Slotvent that provides and unobtrusive finish on the window profile when installed and has been designed to provide the background ventilation rates as set out in the current Building Regulations ADF 2010. Paxton Fob 695-644 Net2 Proximity keyfobs Box, one Color, 10 Count (Pack of 1) £4110. Buy Trickle Vents and get the best deals at the lowest prices on eBay!. Acoustic window ventilator. Greenwood F Vents 383mm 2500EA . Save 5% on any 4 qualifying items. 550mm. Overall Length: 550mm. Adjustments to slot heights may be needed to achieve the EQA requirements. 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. 500+ bought in past month. Greenwood Acoustic window ventilator (White ) Quantity. Learn More . Greenwood S vents with the added benefit of a pullcord operation should the vent be in a hard to reach position. How can we improve the . View more EAR42W: Fresh air in or out – no noise. 5 x 10mm, outer: 164. if you can't find what you are looking for please ask us we can source even more than the selection listed. 12 Window system Matrix 70 Sculpt Ver 1. Height: 23mm; Upward and downward air deflection options; Available in 305mm, 400mm and 550mmGreenwood Trickle Vents No Trickle Vents CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Restrictors (M70) No Shape : As viewed from outside #PST-ID:plain# Order Number Job No:- 623698 Frame Schedule Contract Number Delivery Date 30/06/2022 Customer Name VICAGreenwood Trickle Vents No Trickle Vents CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Restrictors (M70) No Frame FR2 Style code 3002. Continuing Professional Development. UHS provides the ironmongery for new Swansea Penderyn Whisky Distillery. Trickle vents built into frame of bi-fold doors – Image courtesy of aspirebifolds. How to fit trickle vents - a short guide. 85 +VAT. Yale SlotVent – Singles 252mm 2500EA. Next. 50+ bought in past month. Greenwood Trickle Vent 400 mm Simon Trickle Vent Recently Viewed. Versa Greenwood Slot Trickle Vent 305mm White - 3000s. The concept revolves around ‘one product’, which has been designed to be flexible in application (ceiling and wall installations) and to meet the performance requirements of all ‘wet’ rooms within a dwelling. The Greenwood 5000EA slotvent is the smallest on the market, delivering 5,000mm² equivalent air flow through one single unit. From The Anvil White Medium Aluminium Trickle Vent This product is easy to fit, suitable for many construction types and does not compromise on. Single-Speed. tan (light oak) and cream (RAL 1015). 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) External2500FB – 383mm (L) x 16. Read more. 595mm trickle vent available in white only. Mechanical Ventilation with Heat Recovery unit (MVHR) View. Downloads. ) and intermittently as a bathroom fan (see 9. net - Chlo Products Ltd - Retail Division Description: Leaders in the supply of window ventilation systems, stockests of CPS, Greenwood, RW Simons & more. There are no current changes to the Building Regulations in Wales. The easiest and cheapest option seems to be replacing my basic trickle vents with acoustic vents. GREENWOOD Clip Fit F Vent - 2500F White. When Are The Changes Coming Into Effect? The changes to Approved Documents F, L & O come into effect from the 15 th June 2022. Our energy-efficient units offer extract ventilation, with automatic boosting features for those times when you need more power. 3 Window system Matrix 70 Chamf Ver 1. Manufactured from aluminium alloy and available in white and brown. Add to Cart. News: AREA24 - The Titon Advantage. Latest News. Titon Window Trickle Vent Trimvent Select Xtra XS13 & S13 2000EA 4400EA. Glazing Insider Thank you for watching, if you have an idea for a video feel free to get in touch. 5-10-1645 x 12mm. Overall Width: 22mm. Window ventilation is essential, and is also enforced by the building regulations. 32. 95. . 6 Frame colour White Glass specification (1) 28mm Unglazed Door operation Open OUT Handle height 950mm Frame (Cill) Silver 20mm MI Low Ali Thresh (M70)Greenwood Trickle Vents ) No CE Brackets (M70) Yes Corner Protectors (M70) Yes Drainage (M70) Base Drainage Window Locking (M70) Shootbolt Locking Handle Type (M70) Std Inline Locking Handle Colour (M70) Satin Chrome Hinge (M70) DGS Hinge Frame FR2 Style code 3. As low as £15. 99 Inc Vat. 3. Offers continuous running at a very low rate with extremely low noise levels. The S Vent is a classically styled through-frame Slotvent that provides background passive ventilation in line with the requirements of the current Building Regulations ADF 2010. Find out how to easily retrofit a trickle vent to your door with our step by step video to guide you. Product description. Greenwood SB Vents (Bottom Mounted Operation) 400mm 3200EA . Sort by:Trickle Vents, known also as background ventilators, are natural ventilation devices which can be integrated into façades or window systems as an alternative to operable vents, specifically in high-rise buildings. The WOW. What sets this apart from the rest is that it can distinguish between a hot humid summer's evening and a man-made. Your cart will contain total 27 points that can be converted into a voucher of £2. Our extensive range and comprehensive support will provide you with a solution for any housing project. . Whether you need white trickle vents to fit a standard 70mm PVCu profile, slimline anthracite grey trickle vents to fit on aluminium windows or. One of the best performing acoustic window ventilators available in the UK. For this reason, our solar powered vents will now be branded 4 SEASONS Solar Powered Vents. Benefits. 534 ratings. Add to basket. If so, the new windows will need trickle vents. £4. £7. Greenwood UPVC Trickle Slot Vent 2500EA 250mm Long Manufacturer: Greenwood £16. Although the vent can be closed, they. Add to Cart. GB DIY Store 5 x uPVC Window Trickle Slot Vent White 300mm White - Reduces Condensation, Damp & Steam (5 Pack) 73. 03. Keywords: Trickle Vents,window vents,chlo products trickle vents,greenwood trickle vents,slot vent,trickle ventilation,air vents,window air vents,air bricks,soffit vents,door locks,window handles,replacement window. Have a look at Approved Document F on the Planning Portal. Air vents are usually installed within a wall to allow air to pass through, designed to promote air flow and improve ventilation. Constant volume single point extract fan (2 pages) Fan Greenwood CMEV-3 Installation Instructions. Add to Cart. £1999. Greenwood SB Vents (Bottom Mounted Operation) 400mm 3200EA . 5. For durable and high-quality Trickle vents, view the complete range from Duffells, serving the window trade for 60 years. 95. Espag Handles Tilt & Turn Handles UPVC Window Vents UPVC Window Espag Mechanisms Shootbolts Night Vent Keeps Friction Hinges. Premium Trickle Slot Vent for uPVC Double Glazing Window - Reduces Condensation. Black (2) Light oak (2) Mahogany (2) White (2) Length. £11. 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. Mains 230v. Humidity control to regulate supply of fresh air effectively throughout the day in response to changing indoor humidity levels. Add to Cart. Product description. Sleeves available to ensure full compliance. This is the Greenwood 5000EA trickle vent which is one of the smallest Slotvent on the market delivering 5000mm² equivalent area through one single unit. Trickle Vents; Trickle Vents; Chlo Products Vents; Easy Vent; Delta Vents; Titon; Reson Window Vents; Greenwood ; Window Vent Templates; RW simon;Leading ventilation brand Greenwood Airvac, part of Zehnder Group UK, is thrilled to announce it has passed the 1 million unit sales milestone for its EA window vent range. Colour: White. EAQ42W is an acoustic window vent suitable for new build and refurbishment and can be applied to most window profiles with add on sections. The range of aesthetic and compact window vents was launched to provide the most optimum solution to changes to Part F Building Regulation requirements for trickle vents. + VAT. a. The unit has two fixed trickle speeds of 9l/s or 10l/s and three fixed boost speeds of 13l/s, 14l/s or 15l/s. Save 5% on any 4 qualifying items. Trickle Vents & Canopies. 5. The joint piece has an extra secure fixing it in to stop the vent from dipping on the middle over time. RRP: £7. Easy to fit - screws supplied. Add to basket Awenta 130x130mm 110mm Duct Wall Ventilation Grille Cover Net Pull Cord Shutter. Reference CPS. Internal controllable trickle ventilator. Price: £145. View moreUnique controllable tilting T-bar. Overall Length: 305mm. Framevent PVCu Ventilator. deliver update: Order before 12:00pm for same working day despatch ×Trickle Vents by "Greenwood" we have these vents available in various colours and sizes. Although this vent supports compliance, we would urge you to read our handy guide before you purchase which summarises the new requirements. 500+ bought in past month. Compare Selected. Also. Within this category you will find a huge range of trickle vents for wooden, Upvc & aluminium windows. Can be retrofitted and are sold in singles. Whether it is a home extension, new-build or replacement windows, the majority of. The smallest slotvent in the market 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. The Greenwood Story. Leading trickle ventilation expert, Greenwood Window Vents has launched the 5000EA trickle ventilator; the smallest product on the UK market that delivers 5000mm2 equivalent area. Suitable for timber, UPVC and aluminium. Performance & Dimensions. Add to Cart. information on this page?Slotvent 4000 S With Front Operation Switch - Brown available at great trade prices with easy and free returns. Greenwood Airvac CV2GIP Features. The S Vent is a classically styled through-frame Slotvent that provides background passive ventilation in line with the requirements of the current Building Regulations ADF 2010. Currency:. Large selection of colours as standard. 3. 38/count) +. A 300mm vent is suitable for windows. First, consider the size of the vents. 5X 264mm EA2200 Black MJ2000 Trickle Slot Vent for Prevents. GB DIY Store 5 x uPVC Window Trickle Slot Vent White 300mm White - Reduces Condensation, Damp & Steam (5 Pack) 4. This Range provides a cost effective solution to suit the needs of noise polluted sites. Easy to fit and durable, the vents are available in a choice of colours, including Standard White, Bright White, Dark Brown, Tan, Cream, as well as dual colour options on specific models. 43 Postage . Both window and wall vents are a popular. Greenwood 8000HD Trickle Vent HD Vent Our easy to fit Greenwood 8000HD Trickle vents can be fitted to windows or doors (Upvc or timber), as an aid to controlling condensation. Part Code. When used correctly, trickle vents do not contribute excessively to heat loss. Manufactured from PVC. £7. Greenwood 8000HD Trickle Vent HD Vent. Greenwood Slotvent 4000 S uPVC/Timber Window. Add to Cart. Omnique safe and secure window fan - The only window fan accredited by the Secured by Design Initiative The Greenwood Acoustic vents provides the perfect solution, delivering an effective level of air replacement while keeping out unwanted noise. ago. Adjustable trickle vents, night slot vents & rotary vents offering ventilation for double glazed windows. Buy Greenwood S Vent Screw Covers part of our Greenwood range at trade only low prices for next day delivery. Several trickle vent sizes are available in the UK - You can find them outlined in Document F. blackthornjohn • 6 mo. Carl F Groupco stock compliant vents from Glazpart, Greenwood, RW Simon and Yale. Available in bottom operated only. Learn More . Our range of trickle vents give your home a gentle air flow, creating a healthier environment that also combats mould & damp. Clip-fi t and screw-fi x options. 3 Window system Matrix 70 Chamf Ver 1. These Greenwood trickle vents are designed to provide continuous effective ventilation, helping reduce mould and condensation. 2 Acoustic Modules. Colour: White. 42. The No. Whether you need white trickle vents to fit a standard 70mm PVCu profile, slimline anthracite grey trickle vents to fit on aluminium windows or. Was: £15. Provides effective air ventilation of 27 00mm² (4000S) or 1800mm² (3000S) to reduce mould & condensation. 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. Our easy to fit Greenwood 8000HD Trickle vents can be fitted to windows or doors (Upvc or timber), as an aid to controlling condensation. hinges, trickle vents and extract fans. Surface-fixed, no recessing required. Browse the full range of Carl F Groupco ventilation systems here, including ventilation fans, fan grilles, and flexible ducting. Greenwood Slotvent 4000 S uPVC/Timber Window Vent With Bottom Operation Switch - White . Greenwood UPVC Trickle Slot Vent 6000SFW 550mm Long in White or Brown. A little tip when fitting the vents, go into the top of an opening window/sash as this is much easier than trying too get it through the top of the frame. They’re especially good for tackling issues like dampness and mould.