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Backdraft shutter



Free delivery and returns on all eligible orders. This single phase motor pack is equipped with actuator, motor bracket, linkage, and mounting hardware (fasteners). 54 In. In a building ventilation application, backdraft dampers are sometimes referred to as shutters. Genuine Xpelair. Extractor Fan with Backdraft Shutter 100mm 4" 120mm 4. Build Time. Adding to your basket. It is suitable to connect to 100mm ducting. , Mounting BUY NOW - Manrose 1230 In-Line Backdraught Shutter - 100mm (4") - Free delivery when you spend £90 online today! These handy additions to ductwork help reduce unwanted odours by closing ducting when the ventilation is turned off. Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Product Title. The curb surface must be flat to permit an airtight seal. Using bolt, nut and lock washer provided, fasten motor plate to shutter frame and Exhaust Shutter,Fits All information contained herein is the property of Imperial Supplies LLC, and is published here for your use only. TAMCO is an industry leader, with over 50 years of experience in innovative air control solutions. Specialist damper, designed to permit air to flow in one direction. It has “butterfly” wings and a very weak spring to minimise airflow   Stock Quick Order Entry · 4 Inch Flexible and Rigid Ducting; 4 Inch In line Back Draft Shutter product photo. Pricing & Ordering. Manrose Internal Fit Wall Kit w/ Backdraft Shutter 117mm (1312X) Internal fit wall kit is designed to simplify installation by allowing the user to fully fit inside the building, avoiding the need for scaffolding and significantly reducing the cost and complexity associated with working from heights. 95 NZD Free Delivery. 49 Release for Button Shutter XPro1 XPro2 Fujifilm XT20 X-Pro1 DR X-T20 Fuji X-Pro2 X-Pro2 DR Fuji X-T20 Release Fujifilm XT20 XPro2 for X-Pro1 Shutter Button XPro1 $15. . Christchurch 56 backdraft stock video clips in 4K and HD for creative projects. In grey. Range of axial extractors with airflow rates of approx. 9 out of 5 stars 10. x 17 In. The damper is either a Spring Return type for both horizontal and vertical mounting or Gravity Return used in vertical venting only. I am going to install Panasonic exhaust fans in our bathrooms in new construction through an unvented attic. As stated our "Recommended room size" figures are based on achieving 15 air changes per hour. Draft Blocker Backdraft Damper Inline Extractor Fan Vent Back Draught Shutter Description: 100% brand new and high quality; Features: Male backdraft shutter is lightweight & compatible with ducting. Thousands of new, high-quality pictures added every day. 007 sq. Skip to main content Skip to main navigation DO IT RIGHT FOR LESS. Description: To prevent back draughtsLightweight blades and square opening provide maximum free area when the fan is operatingBlades close under gravity when the fan airflow ceasesAll components are light grey and UV stabilised to provide a long life. This allows air to be ventilated into the atmosphere from the inside of a building, Jan 28, 2013 · I've just replaced my ensuite extractor fan and ducting - run is 5 mtrs - due to the previous vent hose being full of water! I've fitted a Manrose CF100T due to it's ability to move the air over the 5 mtrs, which I assume the previous one couldn't. com ✓ FREE DELIVERY possible on eligible purchases. 278. Find Back draft shutters. Available in sizes 4” through 12. This is a backdraft louver shutter. Heavy duty PVC shutters are ideal for humid applications and corrosive conditions where maintenance or replacement of metal shutters is a nuisance. Sometimes combustion gases that backdraft into a house leave soot. , Shutter Free Area 17. Visit your local store for the widest range of lighting & electrical products. Flaps have an aerofoil section with the weight concentrated at the pivot point. , Shutter Overall Size 57 In. APPLICATIONS. Made of plastic in a  A backdraft shutter is used with inline fans and duct, to stop air flowing in the “ back” direction. 9988 email: mkfans @mkplastics. Manrose Internal Fit Wall Kit w/ Backdraft Shutter 117mm (4418X) Internal fit wall kit is designed to simplify installation by allowing the user to fully fit inside the building, avoiding the need for scaffolding and significantly reducing the cost and complexity associated with working from heights. Plus, explore over 11 million high-quality video and footage clips in every category. Showing all 9 results. Backdraft Shutters. Buy Dayton Fan Shutter, 12 1/2 In - 1C742, 1C742 at SustainableSupply. This model is a rear flanged general purpose exhaust shutter. $169. In-Line Backdraught Shutter - 150mm (6") Code: 1232W. Sells new for $208. Shutters are specifically designed to be mounted to the front of exhaust fans to help vent air to the outside. Hi, I have this weird/interesting question I dont have much details though. , Shutter Free Area 1. Shop Acklands-Grainger for quality Shutters, Dampers, and Louvers products. Dampers, Shutters and Louvres. 52 Draft Blocker Backdraft Damper Inline Extractor Fan Vent Back Draught Shutter 4" Draft Blocker Backdraft. Backdraft Dampers & Shutters Quality dampers designed for low to medium-velocity systems to prevent backdrafts or reversal of airflow. 14 In. 6 Inch Draft Blocker Backdraft Damper Inline Extractor Fan Vent Back Draught Shutter (150 mm) 4. Can be used with wall fans or centrifugal blowers for horizontal or vertical arrangements. Product - DAYTON 3HHP1 54" Backdraft Damper / Wall Shutter, Front Flange, 54-1/2" x. 48" Backdraft Damper / Wall Shutter, 48-1/2" x 48-1/2" Opening Required Grainger Item 1C211. 00 The Ventair Ultraflo is a 10″ White High Extraction Exhaust Fan with Long Life Ball bearing Motor and Backdraft Shutter. BG 4BS. Common backdraft damper materials are Galvanized Steel, PVC, Aluminum and Stainless Steel. It has “butterfly” wings and a very weak spring to minimise airflow reduction. Product Code. 00 Damper Wall Shutter Vent Ventilation Backdraft for sale in Taylorsville, UT on KSL Classifieds. The springs are carefully selected for  TRIMEX Building, Route 11, Mooers, NY 12958 tel: 888. they're only 6 quid to buy, but I thought I'd have a go at designing one 100mm OD 94mm ID shutter opens up to about 30 de. Family owned and operated since 1947, Air Conditioning Products Company (ACP) is a world-class manufacturer of shutters, dampers, louvers, and other products for air movement equipment. BDD-1004- Backdraft Damper Is a Backdraft Damper Flanged Designed for Horizontal Mounting, as Fan intake. Outside Mount Series 3100M - alum. MD - Motorized Damper This normally closed, power open, 24V or 120V motorized damper for round ducts can be used to control the sequencing of outside air in forced-air systems. Series BDS The backdraft shutter is designed for installation in circular ventilation ducts to prevent air flowing in the wrong direction when the fan is not in operation. , Shutter Overall Size 17 In. Backdraft Damper / Wall Shutter (13) Backdraft Damper / Wall Shutter, Front Flange (2) Whole House Fan Economy Ceiling Shutter / Ceiling Shutter (1) Home Accessories Backdraft Shutters. Specifications. Luxair now produce very high quality outside coloured wall grilles with a built-in backdraft shutter that prevents against any odours or wind returning back into your kitchen or bathroom, these vents come in all the modern colours with the new Anthracite grey proving very popular. Model 3100 Counterbalanced Backdraft Damper Nov 16, 2017 · Ventilation Extractor Fan Backdraft Shutter. Description. Find backdraft stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Back Draft Shutter System 250mm Ducting. The weight of the blades of a backdraft damper are used to restrict the flow of air in one direction. Counterbalanced aluminum louvers have felted edges, a galvanized steel reinforcement strip, and stainless Welcome to Shutterly Fabulous, the UK’s original shutter experts. Sounds like a thud of something hitting the side of the house. MFS-40 Counterbalanced Backdraft Damper - Aluminum; MFS-41 Light Duty Shutter - Aluminum Blade; MFS-42 Light Duty Shutter - Aluminum Blade; MFS-42HD Heavy Duty Shutter - Extruded Aluminum Blade; Metal Form Manufacturing Shutters are designed to work similar to a check valve allowing airflow in only one direction. , Flange Width 1-1/2 In. Roll form blades or  Find Blauberg 150mm Fan Exhaust Backdraft Damper at Bunnings Warehouse. Links. INSTALLATION INSTRUCTIONS & PARTS LIST CEILING SHUTTER / BACKDRAFT DAMPER MOTOR MODELS MTR-610, MTR-611 A backdraft shutter is used with inline fans and duct, to stop air flowing in the “back” direction. The motor is single phase and is equipped with motor plate, linkage, and mounting hardware (fasteners). Add to Cart. Back draught shutter on extractor fan 30th Nov 16 at 7:19 PM #1 Hi, just wondering if someone can please help with queries on back draught shutter for bathroom extractor. Backdraft dampers are a simple and effective way to prevent unwanted outside air from entering your home or office. More information. Airflow 6600ADS Ensuite Fan, Light And Heater With Backdraft Shutter 2x275W Heat Lamps White. Suitable for small bathrooms (toilets and en suites), kitchens and laundries, these three-in-one units are double-insulated and BCA compliant. INSTALLATION INSTRUCTIONS & PARTS LIST BACKDRAFT DAMPER AND 75mm Backdraught Shutter; 3 inch Ducting Connector with Non-Return Damper Flap; Inline Extractor Fan Vent Back Draught Shutter 1. Buy this for $50. Made of metal, this backdraft shutter will connect to 125mm ducting if required. Price (ex VAT) Price (inc VAT) Quantity. PVC Gravity Backdraft Shutter (PDF catalog) AirFlo 60 inch Gravity Backdraft Damper Shutter. Features Nov 03, 2015 · On the outside they fitted a vent cover with flyscreen. Unit automatically opens and closes when the fan motor is activated. 4”. 49 Release for Button Shutter XPro1 XPro2 Fujifilm XT20 X-Pro1 DR X-T20 Fuji X-Pro2 X-Pro2 DR Fuji X-T20 Release Fujifilm XT20 XPro2 for X-Pro1 Shutter Button XPro1 Bathroom Humidity Sensor Extractor Fan-Decor series 100 CH-Neon Light Indicator, Automatic Backdraft Shutter, Adjustable Run-On Timer, Adjustable Humidistat Motor pack is designed for use with ceiling shutters and backdraft dampers. Flaps have an aerofoil  Find many great new & used options and get the best deals for Extractor Fan Non -Return Valve Backdraft Shutter Damper at the best online prices at eBay! Order online at Screwfix. x 39 In. 1 year warranty. Dampers & Shutters - Collapse All. INSTALLATION 1. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction. • Ideal for  Inside Mount Series 3200M- alum. , Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 3 In The Ventair Ultraflo is a 10″ White High Extraction Exhaust Fan with Long Life Ball bearing Motor and Backdraft Shutter. A carbon monoxide analyzer can be used to test for backdrafting of that gas. 52. Our Products > Ventilation > Extractor Fans & Ducting > Manrose Ventilation > Ducting & Accessories > Ventilation Accessories > Backdraft Shutters $95. Filters Metal Backdraft Shutter (125mm) Metal Backdraft Shutter (125mm) 0 out of 5 (0) Providing the trade and consumers with quality, innovative products for home and commercial air extraction and ventilation, and clever lighting and sensor lighting products. $25. ft. Buy Soler & Palau MCA-150 Today. x 54-1/2 In. Includes backdraft shutter. x 14-1/2 In. Add to cart · motorised-single-room-damper. com. They can modulate gas or air flow, detour flow into alternative systems, or isolate a process for inspection and repair. Backdraft Damper / Intake Shutter Shutters 1 result found that include 5 products Get a durable exhaust shutter from Grainger to help properly ventilate your building. Moulded in impact-resistant UV-stabilised PVC. Made of metal, this backdraft shutter will connect to 100mm ducting. Electrical connection 12VDC Calima auto: 12VDC (switch C always) Continuous basic ventilation, automatic forcing at elevated moisture levels, and the influence of light change. Louvers are a type of Backdraft #192 Page: 1 2 Views: 1345 Backdraft Damper / Wall Shutter, Fits Fan Dia. Shutters open when the fan is running and close when it is off. View a wide selection of Farm Equipment and other great items on KSL Classifieds. Once you know, you Newegg! Xpelair external gravity back draught shutter kit For 4" diameter bathroom fans or cooker hood outlets, can also be used for tumble dryer outlets. From $14. Filter Results Continental Fan BDD Series Backdraft Damper, 4" Reversomatic Shutter or Back Draft Damper, 24" x 24" 400AB Accuform Signs KDD477 STOPOUT Trailer Lock Glad Hand Lockout Blocks Access To Air Line Connection Plastic With Zinc Coated Steel Hinge Pin Red A backdraft shutter is used with inline fans and duct, to stop air flowing in the “back” direction. It is made strong and lightweight from aluminium and galvanised steel. Back Draft Shutter  16 Apr 2019 Not printed yet. May have 3 or 4 flaps interchangeable, approx 6" square. Shop Backdraft Shutter / Coupler - For Ducting - (1 Pack) Fans - 100mm 4" Round PVC - Vent - Back Draft. Quick look at a couple of solutions for stopping cold air blowing back through ventilation vents. Sign up for free today! Dec 15, 2015 · Look for a dark residue on the top of your water heater. 0 (1 votes) Store: Hon&Guan Inline Duct Fan Store US $9. Keep your rooms fresh and dry with our automatic-sensing motorized dampers. Also available in 400mm diameter to special request. Price $ 302. Nov 11, 2019 · Are you sure there is no backdraft shutters in your extraction fan units? Happens most, but not all nights. PVC Gravity Backdraft Shutter. This is exactly what the bathroom backdraft shutter sounds like in our house (It's built into the extraction unit), how often depends on the direction of the wind. Auckland 6 Stanway Place, Ellerslie Auckland 1051 New Zealand. MCA series Twin Direct Connection backdraft shutters for TD fans. In-line back draught shutters manufactured in electro-zinc steel these units have a positive spring return mechanism. They ensure that unwanted draughts of hot or cold air do not find their way back into your home. 436 sq. Any reproduction or distribution of this information without prior written consent from Imperial Supplies LLC is strictly prohibited. The company has evolved considerably over the past few years to established itself as one of the industry leaders in producing turn key minus cars. Diameters from 100 to 315mm. The middle fins operate on a spring which is strong enough to close them, but weak enough for airflow to open them. 8 Inch Plastic Louvered Shutter. Get fast Free Shipping on Shutters, Ventilation, Louvers and Dampers, and 1 Million industrial and maintenance supplies today! Louvered Shutters Louvered Shutter 8 Inch. x 57 In. , Mounting Hole Size Prepunched, Max. TAMCO manufactures high-end, superior-quality dampers and air control products, serving commercial, industrial and institutional markets. 7" 150mm 6" Ventilator WAZ. Buy DAYTON 4FZJ5 16" Backdraft Damper/Wall Shutter, 16-1/2"x16-1/2" Opening with fast shipping and top-rated customer service. Start / stop via manual switch T. I am not the engineer on the project and I was asked this question very casually. Motorised Single Room Damper 240v  Buy neverest RK 4" Professional Backdraft Shutter Damper Connector Duct: Everything Else - Amazon. Backdraft shutters are a useful tool for keeping smelling air inside a room in times when the extraction fan is not running. The shutter prevents the air re-circulating when the fan(s) are not in use. Shop duct fans & dampers in the hvac duct & fittings section of Lowes. Designed to provide anti back draught, and fit in between Solid Plastic Ducting, Flexible Ducting. Backdraft Damper / Wall Shutter, Fits Fan Dia. Available in a variety of sizes, these shutters are especially useful for stopping cold air entering your growing environment when fans are switched off. 91 ABD - Butterfly Shutters CBD - Backdraft Shutters Features These shutters are designed to fit inside the unit base and be positioned on the roof curb before fitting the roof unit. The product Build Time you see represented on this site is only a typical number of days the manufacturer states it needs to build the product(s) when ordered. Weather tight and quiet operation. Available in sizes 4” through 14”. Filters Metal Backdraft Shutter (125mm) Metal Backdraft Shutter (125mm) 0 out of 5 (0) 500mm Backdraught Shutter. Inspectors should be properly trained to use these before they attempt to use one during an actual inspection, primarily to avoid false negatives. , Open Depth 6-1/4 In. Package Include: Vent Back Draught Shutter x 1 DAYTON 53DR20 20" Backdraft Damper / Wall Shutter, 22-1/2" x 22-1/2" DAYTON 53DR20 20" $50. Typically installed outside at fan  Results 1 - 6 of 6 We supply a extensive range of genuine Xpelair accessories for your ventilation and extraction fan systems, including Backdraught Shutters  Manrose round ducting connector with built-in damper and back draft shutter. , Shutter Overall Size 39 In. Back Draft Shutter System (250mm )#SCBDSS250MM. Louvered backdraft shutters manufactured from UV stabilized plastic material. This allows air to be ventilated into the atmosphere from the inside of a building, The Backdraft shutter is an all metal construction so should last a long time. x 36-1/2 In. Find quality duct fans & dampers online or in store. Product Image. ie. Made of galvanized, acid-resistant steel sheet. This fan has a GREAT airflow of 750m3/hr. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Back draught shutters, also known as non-return dampers are designed to permit air to flow in only one direction, making them useful for applications where a duct is only used at intervals, and needs to be shut down when not in use to prevent heat loss or backflow. Exhaust type; The fan shall be suitable for window mounting; Condenser motor with thermo cut-off; Well lubricated bearing for long life operation Male backdraft shutter is lightweight & compatible with Hon&Guan ducting. Check the Soler & Palau MCA-150 TD Series Connection Inline Backdraft Shutters - 6-Inch ratings before checking out. Colour - grey. Key FeaturesFor use with 100mm / 4'' round ductingBuilt-in damper / shutter. Male backdraft shutter is lightweight & compatible with Hon&Guan ducting. Internal fit wall kit is designed to simplify installation by allowing the user to fully fit inside the building, avoiding the need for  A backdraft shutter is used with inline fans and duct, to stop air flowing in the “ back” direction. Motor pack is designed for use with ceiling shutters and backdraft dampers. They prevent prevent air leaks when the exhauster is not in operation. Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Designed to meet  Plastic backdraft shutter is used with inline fans and duct, to stop air flowing in the "back" direction. Discover the full range of products in S&P Do not wait any longer! WSK shutters are airstream-operated and designed for surface mounting. Calima switches operated on/off: Is a Backdraft Damper with Inner Flange Designed for Horizontal Mounting, as a Ceiling Shutter. 4 Inch In line Back Draft Shutter. Backdraft #380 Page: 1 2 3 4 Views: 747 TAMCO Damper Products. The blades have a galvanized steel reinforcement strip across the top of each blade for added strength and counter balancing efficiency. , Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 54-1/2 In. , Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 36-1/2 In. Wall Louvers are often stationary but sometimes adjustable. Fits over the TD lip and is mounted on the outlet side. This is how the unit snaps shut when the fan goes off; there is nothing keeping it open. The wall cap damper is typically metal, making it a Quality Outside Louvred Wall Vents With Backdraft Shutter. , Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 3 In. Acklands has been Canada's premiere industrial supplier for over 125 years. Can I use fire damper in place of louver and fire damper? let me explain: There is this room which has fire rated wall. We specialise in top-quality plantation shutters to fit any internal space and every interior style – and we promise you a Shutterly Fabulous service every step of the way. The springs are carefully selected for positive closure without undue pressure loss. They have a single disk flap on two hinges. Back d raft Dampers are generally used in front of exha ust fans or in conjunction with a gravity intake ventilator and are either blown or sucked open by the force of the fan. Blocker Damper Backdraft Draft Shutter 4" Inline Draught Vent Fan Extractor Back Back Extractor Fan Blocker Inline Draught 4" Damper Vent Draft Backdraft Shutter Backdraft Damper / Wall Shutter, Fits Fan Dia. Details about Bathroom Extractor Fan 100mm with Pull Cord Switch and Backdraft Shutter Valve. Plastic material well suited for use in conjunction with inline fans for domestic extraction purposes. The most common application of a backdraft damper is on the outlet of a fan. This item Dayton 12" Backdraft Damper/Wall Shutter, 12-1/2" x 12-1/2" Opening Required (1, 3-Panel) Iliving 12 Inch Variable Speed Shutter Exhaust Fan, Wall-Mounted, 12" iPower 12 Inch Shutter Exhaust Fan Aluminum,High Speed 1620RPM, 1600 CFM, 1-Pack, Silver This model is a rear flanged general purpose exhaust shutter. Backdraft Racing Inc was founded in January of 2001 by 2 world champion auto racers, Tony Marten and Reg Dodd. The EMGB-HPA backdraft shutter is designed for external mounting specifically with the HPA fan. DAYTON 53DR20 20" Backdraft Damper / Wall Shutter, 22-1/2" x 22-1/2" DAYTON 53DR20 20" $50. , Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 2-1/4 In. For use with 4 inch fans supplied without a backdraft shutter. We specialize in backdraft dampers, wall shutters, motorized dampers, stationary louvers, ceiling shutters, gable shutters, and contract / private label Rear flanged exhaust shutter for areas where corrosion is a known problem. For use in domestic ventilation applications; kitchens, toilets,bathrooms & hydroponics. Backdraft Dampers - Model 3000, 3100, 3200 Your Backdraft Damper or Ceiling Shutter Motor Pack is designed to automatically open the shutter when the fan is turned on and closes securely when the fan is turned off. 032" Thick Aluminum Formed over 3/16" Diameter Steel Rod Single Thickness Blade, Aluminum 100mm Backdraft flaps for Bathroom extractor fan called a "backdraft flap" that I could fit to the above it in the loft so that it stops airflow from the outside Dampers and louvers control the flow of air in a process system or enclosed area. A backdraft shutter is used with inline fans and duct, to stop air flowing in the “back” direction. Dampers are usually motorized or manually-adjustable for flow control. (Can be combined with backdraft shutter) 100-240VAC 50 / 60Hz Must be selected via Pax App. PRODUCT DETAILS Use with direct or belt-driven exhaust fans to prevent air backflow when the fan is off. 22 results for damper backdraft fan Save damper backdraft fan to get e-mail alerts and updates on your eBay Feed. The BD2A2 Backdraft damper offers backdraft protection in light to medium duty applications and is AMCA certified for Leakage and Performance. Dimensions (inches): Home Accessories Backdraft Shutters. 100mm 4 Round PVC Inline Backdraught Shutter For inline ducting use Manrose 414CD instead Prevents backdraught when fan is not in use. Back Draft dampers are commonly installed in fan exhaust systems to prevent a back draft of outside air when the fan is off. Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. I fitted a brown giant air cowl (without flap) over the top of that to try prevent the wind blowing in, but when it's really windy the backdraft shutter is still noisily flapping about at times. S&P MCA Series TD Twin Direct Connection Backdraft Shutters. 254 sq. This feature ensures easy opening and minimal pressure drop. Just mount it over your air inlet hole and spring hinges will close the flaps automatically when no air is sucked in. CBD backdraft shutters have a galvanised steel frame and extruded PVC flaps; the flap spindles run in nylon bushes. FEATURES: Sturdily constructed from all aluminum extrusions. Wellington 15 Te Puni Street, Petone Lower Hutt, Wellington 5012 New Zealand. Quality Outside Louvred Wall Vents With Backdraft Shutter. Unfollow damper backdraft fan to stop getting updates on your eBay Feed. The Panasonic fan comes with a built-in damper and their installation guides mention using a wall cap with a damper too. EnviroVent SIL100T Silent Extractor Fan 100mm Model comes with Backdraft Shutter and Adjustable Timer - buy in-store and on-line from John Cribb & Sons  S&P PERW Series Louvered Backdraft Shutters. Easy DIY. Build times are based on business days (excludes weekends & holidays). Fantech RSK Backdraft Dampers. Shipping Info. Silent 100 Design CHZS Extractor Fan with Backdraft Shutter & Humidistat - Silver. Spring loaded for positive closure. 00. PVC BACK DRAFT SHUTTERS. Shutters are Motorized Backdraft Damper (1)  Compatible with diameter 4 Inch. 36 In. Designed to provide anti back draught,  In-line back draught shutters manufactured in electro-zinc steel these units have a positive spring return mechanism. Units are screw fixing and suitable for internal or external wall or duct mounting in the vertical plane. These backdraft dampers are installed at the fan discharge. , Shutter Construction Material G-90 Galvanized Steel Frame and Tie Rods, Shutter Opening Required 14-1/2 In. Sizes available: 12"W x 12"H to 48"W x 48"H; Single or Double Panel; Heavy-duty fiberglass pultrusion frame and blades, stainless steel tie rods; Maximum free area velocity - 2500 fpm BACKDRAFT SHUTTERS - TYPE WSK WSK shutters are airstream-operated and designed for surface mounting. Most back draft dampers (consult factory) have a minimum velocity rating between 2,000 - 3,200 feet per minute (fpm). Soler & Palau MCA-150 TD Series Connection Inline Backdraft Shutters - 6". Cannot be used with plastic ducts as the sizes are different. This means there are two dampers. Steel back draft shutters for ventilation and ducting kits, ensures the flow of air only goes one way and stops animals, debris etc from going through and in to ducting systems Find many great new & used options and get the best deals for Extractor Fan Non-Return Valve Backdraft Shutter Damper at the best online prices at eBay! Free delivery for many products! The shutter prevents the air re-circulating when the fan(s) are not in use. The Panasonic damper is very light plastic does not seal well and opens easily. , Shutter Free Area 7. 80 m3/h, Home > Dampers > Backdraft > BSL Shutter: Blade Material:. Sign in for checkout Check out as guest . backdraft shutter