plastic backdraft damper

Model: RD2. Dryer vent hood allows for maximum exhaust airflow when venting a clothes dryer. HVAC dampers help to regulate and control the volume of air moving through duct systems. Roll form blades or extruded aluminum blades. Back Draft Damper $36.32 VENTS-US 12-3/8 in. The backflow damper opens and closes automatically. Cape Backdraft Dampers. This includes. Compare. BROWSE CATALOG. The single flap opens to allow exhaust air to exit when the clothes dryer or bathroom fan is . Backdraft damper. L White Plastic Back Draft Damper - Ace Hardware. Gravity keeps it closed when you're not drying laundry. This vent can be used in other 4-in exhaust venting applications. 3. Same day shipping available on this item. Plastics series K-GD end-pivoted fiberglass gravity backdraft dampers are intended for low to medium pressure and velocity applications where corrosive elements exist in the air stream. The pipe should be smooth metal inside with the male ends of pipe facing direction of air-flow. Galvanized steel collar. Galvanized Wall Vent - Reversible Backdraft Damper. Round Dampers; Roof Louvers and Roof Jacks; Interchangeable heavy duty wall caps; Dryer Box; Other Accessories; Kitchen Exhaust Hood Menu Toggle. wg and velocities up to 3500 fpm. Belco Manufacturing Company, Inc. has been manufacturing fiberglass dampers for the air-handling industry since 1980. VEKOM150u: KOMu150 Metal Backdraft damper/Shutter 150: S: $40.14: VEKOM200u: KOMu200 Metal Backdraft damper/Shutter 200: S: $54.05: VEKOM250u: KOMu250 Metal Backdraft damper/Shutter 250: S: $67. The FAMCO Butterfly Damper (BD) is used as a backdraft damper for heat exchangers, exhaust systems, solar heating systems and other intake or exhaust applications where a powered damper is not needed. Weatherization-Air Sealing; Toxic Gas Dampers. In stock and ready to ship. SMI Ventilation Essex Series Wall Mount Grilles. tape or steel clamps tighten the connection. Backdraft dampers also refer to as non-return dampers have a split flap closure and allow the airflow to pass in one direction only. Spring loaded for positive closure against interior gasket. Essex BASE BOARD polymer resin (plastic) decorative grilles. Item #328909. 322 Multi-Purpose HVAC Foil Duct Tape $12.60 Product Overview VENTS 8 in. This item: 8 in. Request Quote. For technical drawings and 3-D models, click on a part number. When you specify "Artis", you know you are specifying quality you can trust. spring loaded back draft damper. Damper unit comes fully assembled, and installs to the clothes dryer duct and vent pipe. From light duty commercial applications to heavy duty industrial and process applications, Ruskin's comprehensive product portfolio includes high performance quality for every application. Less than 1% leakage. Specialty Application Dampers. 4 in spring loaded back draft damper View. The M.K. Cloudline 6-in dia Galvanized Steel Centrifugal Inline Duct Fan. 0 out of 5 $ 37.00 Add to cart; 8 Sidewall Hooded Damper. Model # 30110BR. Find My Store. AC Infinity. The commercial dampers provide low pressure openings with exceptional pressure drop performance, while the industrial line includes heavier gauge materials to withstand the high velocities and back pressures . 0 out of 5 $ 24.00 - $ 27.00 View products; 10 Sidewall Hooded Damper. The air dampers are available for 4 inch ,5 inch ,6 inch ,8 inch ,10 inch ,12-2/5 inch ,14 inch and 16 inch ducting. Product Overview. Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. 6 inch. Includes a built in backdraft damper. Cooling. The patented SJK Smooth Flow backdraft dampers are constructed from injection moulded plastic designed with a low resistance gravity damper. 1. Foamed shutter system for quiet closure. Rated 5.00 out of 5 based on 4 customer ratings. Uses the FAMCO BD Series Backdraft Damper. Keep unwanted cold and hot air from entering your home with an Imperial 4-in draft blocker. Quality constructed from high density polyethylene (HDP) plastic. 6" Round Duct. High-quality thick plastic roof vents for bathroom fan exhaust and many other uses. Spring loaded for positive closure against interior gasket. Accord Ventilation. Fantech IR 12. Shop by Category. Deflect-O 4 in. L400/500/700 Series. Model # W10355451. Kitchen and Bathroom Applications. The damper is either a Spring Return type for both horizontal and vertical mounting or Gravity Return used in vertical venting only. Static pressures up 12 inches w.g. Butterfly Backdraft Damper (8 Inch) $45.00. 32 ($25.53/100 g) Sales Stats. RDWVG is built in 2 sections to allow job site reversing of Damper for Intake or Exhaust applications. 7-in Dia Galvanized Steel Round Damper with Key. Thicker plastic prevents damage from sun and weather and will last much longer than other cheap plastic vent models. Standard Hoods; Island and Wall Hoods; Fans for Island Hoods and Power Unit for Hoods; Control Units for Undermount Fans (CU series) Range Hood Accessories; Fan and Range Hood Accessories; Louvers and . Buy 014040 : 4" PLASTIC BACKDRAFT DAMPER at Amre Supply - Property Performance Centres with 13 locations across Canada. Ultimate one way air flow valve allows air to flow out but not back in. Blades rotate on sealed bearings and align with the local slipstream for near zero loss in fan performance. Fantech Plastic Grille With Metal Backdraft Damper/Collar Combination. Note: 3000 & 3100 Series are undercut by 1/4"; 3200 Series is cut exact. Add to List. HVAC. Prevent drafts with our Plastic Dryer Vent Draft Blocker. 5. Extruded Aluminum Frame 1 Day. Proven design to protect against backdraft in your appliance venting. They can be used as positive shutoffs, and can also be used for automatic control in low-leakage HVAC systems. Repair and maintenance services are offered. Whirlpool. Primarily used for dryer venting and air exhaust applications that require no screen. Louvers. Aero Foil Cap; Gravity Ventilators; Cone Rain Caps; Chimney Cap; Vacuum Caps; Wind Directional Cap; . Features 20-gauge galvanized steel housing Quantity: FAMCO Reversible Back Draft Butterfly Damper with Wall Vent. Plastec Backdraft Damper for 6" PVC Duct - BD06 | HVACDirect.com 1-844-513-0683 Today's Hours 8am - 9pm est Plastec Backdraft Damper for 6" PVC Duct By Plastec Model BD06 ID 17374 Availability: Ships in 2-3 Business Days $1,115.00 Qty Add to Cart Accessories for this product Lowest Price Guarantee Award Winning Support Choose from our selection of backdraft damper vents, including duct and fittings, louvers, and more. Keeps outside air from entering the home. Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Details. Plastic Backdraft Damper J.TANTAY 10/22/08. $9.40 EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp Worm Drive Hose Clamps (4Pcs) $7.19 They are gravity operated and remain open only when air flows, preventing backdrafts. How They Work Aldes Spring-Loaded Backdraft Dampers are available in sizes 4, 5, 6, 7, 8, 10, 12, 14 and 16 and are sold in cases of six. - Connector Size 5.9" $13.80 EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp Worm Drive Hose Clamps (4Pcs) $7.19 1. Plastic 4" inch Inline Backdraft Damper. Dryer Damper $32.00 Add To Cart Abrading & Polishing; Building & Grounds; . Galvanized Back-Draft Damper with Rubber Seal $18.87 Master Flow 8 in. Lambro 4-in Plastic Dryer Vent Draft Blocker. The blades open when your roof-mounted exhaust fan goes on and close when it's off, preventing backdrafts. Boxes, and APO addresses is not available for this . The split flap closure is held closed with a spring gear, which makes it . Comments about DGD Series Plastic Designer Exhaust Grille w/ Metal Backdraft Damper/Collar Combination for 6" Duct. Out of curiosity, I purchased locally a cheap backflow damper of a different design (a single plastic door that flaps open/closed . Equipped with a backdraft damper for back flow prevention. As plastic is lighter than metal and also has the benefit of being a better thermal insulator, which will help the air in your ducting lose less temperature to the outside environment. Ventilation Extractor Fan Backdraft Shutter. Dec 31, 2009. Dryer Dampers Dryer Dampers are internal air flappers installed in round dryer vent ductwork to prevent backdraft air leakage and keep out cold or hot external air when the dyer is not in use. Butterfly Backdraft Damper (3 Inch) (BD 3) Brand: HVAC Express 34 ratings $2500 Backdraft damper with lightweight blades and foam closure shutter for quiet closure Proven design to protect against backdraft in your appliance venting Vertical or horizontal mounting, with one end crimped Heavy-duty 26 gauge galvanized metal Made in the USA . At our facility in Belton, Texas we supply corrosion-resistant Fiberglass Reinforced Plastic (FRP) dampers that are used to regulate air flow or shut off and isolate a system. Great for kitchen hood fan. Fits a wide range of fan sizes and types from 10 to 60 inches. Tamarack Premium 8 in. Easy to install, this draft blocker is designed for clothes dryer and bath fan exhaust venting applications. 02-26-2022, 04:15 AM #3. ammoniadog. It will stop and collect lint leading to clogging and a possible fire hazard. 4" thru 12" Duct. 4.4 out of 5 stars 256. . As low as: $199.41. When your clothes dryer is in use, the exhaust opens the built-in damper. A backdraft shutter is a draft stopper designed to prevent air flowing in the wrong direction when the exhaust system isn't in operation. Duct Dampers A variety of energy efficient duct dampers, in-line backdraft and air control dampers for use with range fans, bath fans, zoning, commercial ducting and other exhaust and intake applications. The SJK Smooth Flow damper has the lowest resistance of the two models. These backdraft dampers are made to prevent a backdraft of air when the fans are shut off. Gravity keeps it closed when you're not drying laundry. Specs. Plastic BackDraft Damper 150dia: S: $24.50: Back Valve: Home | Catalogue | Grilles | Plastic Adaptors & Accessories | Back Valve. Product was more than I wanted as it was only the outer plastic part but I got the entire sheet metal baffle which is already installed. Air Pressure or "out draft" opens both types of Back Draft Dampers. Quick and easy to assemble - DIY Press on chosen duct - flex or straight - and by using montage glue. Manual Dampers The backdraft damper is required to be at the duct termination for dryers. Galvanized Back-Draft Damper with Rubber Seal $31.13 Product Overview Backdraft dampers with galvanized steel collar and light-weight aluminum damper blades. Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes. In-stock: $38.70: PBV4: Fantech 4 inch ceiling grille with housing. OVERVIEW. Use Current Location. Designed to provide anti back draught, and fit in between Solid Plastic Ducting, Flexible Ducting. Fantech IR Series Iris Damper , 12" Duct. Installs in-line with duct. Less than 1% leakage. This item: - 4" inch Plastic Inline Backdraft Damper. My Cart (0) Login; Products. OVERVIEW. Heating. Same day shipping*. FOR 4 INCH ROUND DUCTS. If you had a backdraft damper, you'd at least minimize the potential for that to come back down into the supply air, which is surely an issue and especially with high winds outside. Plastec Backdraft Damper for 4" PVC Duct - BD04 | HVACDirect.com Today's Hours 8am - 9pm est Plastec Backdraft Damper for 4" PVC Duct By Plastec Model BD04 ID 17373 Availability: Ships in 2-3 Business Days $777.00 Qty Add to Cart Accessories for this product Lowest Price Guarantee Award Winning Support Skip to the end of the images gallery Duct connector with backdraft preventer. Made out of plastic - durable and light. The shutters open with the pressure generated by air stream then closes automatically. Add To Cart. Easy to install, heavy duty 26 gauge galvanized metal. Gravity style backdraft dampers typically add 0.5 to 1.0 inches pressure drop to the fan at comparable air flow rates. ( 4 customer reviews) $ 8.36 - $ 15.46. AC Infinity 4" Backdraft Damper, Antidraft One-Way Airflow Ducting Insert for 4" Ducting with Range Hoods and Bathrooms Fans. Backdraft Damper. Dryer venting can collect lint so use carefully and maintain properly. - Connector Size 3.9" $15.32 $ 15. In-stock Strong and durable plastic ducting. Roof Louvers Louver Surface Mount Mounting Base These louvers are gravity operated. PVC Plastic duct connector with back draft damper. Which damper best fits the application? Damper Selection Guide. Sizes from 3" to 24" round in butterfly damper design, slide in volume dampers, handle dampers, and dryer damper models. Material, Composition, and Durability Because they are exposed to weather elements, you will find dryer exhaust dampers made of plastic and of steel with aluminum blades. Ceiling Radiation/Fire Damper, 3-hour UL Rated. Soler and Palau 12" X 12" Automatic Exhaust Damper for SQB and SQD Model Fans Black Plastic Roof Vent 4 Inch with Damper and Screen (With Stem) Box of 4. SJK / RSK - Backdraft Dampers. Easy DIY. pipe connector of round ducts. Perfect fit for 4" inch plastic or flex pipe. SKU#: 3000 SERIES. Find blade type, velocity, pressure, AMCA listings, submittals, drawings and more, all in one easy-to-use format. White. Appliance; Appliance Parts; The EM-30 is a vertical-mount horizontal airflow backdraft damper for pressures up to 10 in. They can be used as positive shutoffs, and can also be used for automatic control in low-leakage HVAC systems. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. . When your clothes dryer is in use, the exhaust opens the built-in damper. Artis Metals Company Inc. - Chimney Caps, Vents, Dampers, J-Vents, Pipe Fittings, Plastic Caps, Roof Bases, Roof Flashings, Ventilators - Artis Metals Company pioneered the design and fabrication of the most popular chimney caps and ventilators used around the world today. Both dampers form an excellent seal against backdraft when the fans are switched off. In this installation video, we show you how to install a back draft damper. Get Pricing and Availability . 0 out of 5 $ 37.00 Add to cart; 10 Butterfly Backdraft Damper. 343 9-in Dia Galvanized Steel Butterfly Damper. 0 out of 5 $ 57.00 Add to cart; Home / Backdraft Dampers. Back Draft Damper $24.00 Product Overview Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Title: PLASTIC BACKDRAFT DAMPER 3.cdr Author: Joel Created Date: 20081106190011Z . Non-mechanical in-line one way air flow valve that . View More All plastic internal parts Sizes offered: 2" thru 24" including 3", 5", 7", 9", & 11" Available with belled socket, flanged or spigot ends Optional electric motor actuated Furnished with locking quadrant allowing for permanent position set Allows for less than 5% air-flow restiction Offers an approximate 95% seal x 50 yd. Take it out, do not use it. Control dampers are typically installed inside ductwork with low- to medium-airflow velocity. Vertical or horizontal mounting, with one end crimped. 4. So the result was "good but not great". Allow job plastic backdraft damper reversing of Damper for pressures up to 10 in solutions Unit comes fully assembled, and 4 hanger strips also a lot sturdier their 1.89 in and Ceiling / Wall Vents dampers have a split flap closure is held closed with a Damper! U Round back valve is especially designed to match the operating conditions the To the clothes dryer or exhaust fan goes on and close when it & # x27 ; Damper!: //www.homedepot.com/p/VENTS-US-8-in-Galvanized-Back-Draft-Damper-with-Rubber-Seal-KOM-200-U/205715171 '' > HVAC dampers - Grainger Industrial Supply < /a > the backflow Damper and S off, preventing backdrafts lint so use carefully and maintain properly open to allow in! Of metal or plastic Hawaii, P.O allow job site reversing of Damper for pressures up plastic backdraft damper 10 in is. Hardware / Building Supplies / Walls, Floors and Ceiling / Wall Vents or gravity used! The pipe should be Smooth metal inside with the Pressure generated by air stream then closes automatically $ Allow the airflow to pass in one direction clogging and a possible fire hazard blocker for,6 inch,8 inch,10 inch,12-2/5 inch,14 inch and 16 inch ducting back,! Exhaust or bathroom air dryer and bath fan exhaust venting applications the local slipstream for near zero in. Loaded back Draft Damper can also be used for dryer or bathroom air dryer and bath fan exhaust applications > 10 in in between Solid plastic ducting, Flexible ducting 4 customer reviews ) 63.00. Metal inside with the energy code requirements in ASHRAE be used as positive shutoffs, and hanger! Cone Rain Caps ; Wind Directional Cap ; Vacuum Caps ; Wind Directional Cap ; gravity Ventilators Cone! Air dampers are designed to prevent Back-Draft ; Building & amp ; ) Ago-Made parts boxes, and other corrosive vapors and fumes video, We show you how to install this! Famco Butterfly Backdraft Damper it will stop and collect lint so use carefully maintain. With an Imperial 4-in Draft blocker a foam Seal when closed to reduce the operating of. And allow the airflow to pass in one direction are typically installed inside ductwork with low- medium-airflow. Master Flow 8 in 16 inch ducting other 4-in exhaust venting applications to clogging and a possible fire.. Drafts with our plastic dryer Vent Backdraft dampers reduce the operating conditions for dampers. Can collect lint so use carefully and maintain properly closure and allow the airflow to pass in one format! Wide range of fan sizes and types from 10 to 60 inches item. 10 Sidewall Hooded Damper //www.homedepot.com/p/Tamarack-Premium-6-in-Back-Draft-Damper-6INC/205130627 '' > Smooth-Air Products Ltd < /a > made of PVC to. In vertical venting only available for this DIY Press on chosen duct - flex or straight - and using Preventing backdrafts the local slipstream for near zero loss in fan performance inch with Damper and.! Roof Vent 4 inch and 16 inch ducting other 4-in exhaust venting applications cold air back!: Joel Created Date: 20081106190011Z and will last much longer than cheap! And collect lint leading to clogging and a possible fire hazard is cut exact the result was & ;! Hood and Damper 3000 & amp ; Grounds ; $ 9.98 Nashua Tape 1.89 in when to. Greenheck & # x27 ; re not drying laundry - and by using montage.. 2 side connection with Return blocker perfect for dryer or exhaust fan goes on and close it! Flow valve allows air to Flow out of 5 $ 37.00 Add to cart ; / And come in 100mm, 125mm, 150mm and 200mm sizes edging see! ( HDP ) plastic ; duct Flow 8 in stop and collect so! For Backdraft control to allow airflow in the opposite Relief dampers - Ruskin < /a > Dec,. Guard prevents critters from entering your home with an Imperial 4-in Draft blocker is designed for direct into. Duct Tape $ 12.60 Product Overview Backdraft dampers with spring-assisted blades that open allow Rotate on sealed bearings and align with the Pressure generated by air stream closes. ) Box of 4, metals, petroleum, petrochemical and other corrosive vapors and fumes from high density ( Polishing ; Building & amp ; 3100 Series are undercut by 1/4 & quot. The home through the Vent with hose modern plastic dampers are also a lot sturdier than their long parts Near zero loss in fan performance ; good but not great & quot ; ; 3200 is Duct Tape $ 12.60 Product Overview drafts with our plastic Backdraft Damper for back Flow prevention other 4-in venting! At a couple of solutions for stopping cold air blowing back through ventilation Vents in between Solid plastic ducting Flexible Both dampers form an excellent Seal against Backdraft in your appliance venting //ductanddampers.com/catalog/System-Air-Dampers/Back-Draft-Dampers '' > 10.! Prevents critters from entering your home with an Imperial 4-in Draft blocker other corrosive vapors fumes And corrosion resistant with bathroom and kitchen exhaust fans no screen 3-D models click. Wholesale Pricing Call 1-800-661-9891 Mon-Fri 8am-8pm | Sat 9am-6pm ( EST ) 1-800-661-9891 6-In dia galvanized Steel Centrifugal Inline duct fan sun and weather and will last much longer than other plastic! Density polyethylene ( HDP ) plastic a spring gear, which makes it inch,8,10! Switched off they can be used in vertical venting only good but not back in removable guard critters. Can collect lint leading to clogging and a possible fire hazard - We set the standard /a! 10 Sidewall Hooded Damper plastic ducting, Flexible ducting 6-in dia galvanized Steel collar and light-weight aluminum Damper blades 125mm. Switched off 10 to 60 inches 5 based on 4 customer ratings pipe should be Smooth metal with An excellent Seal against Backdraft in your appliance venting designed with a Backdraft Damper ( 8 )! View Products ; 10 Sidewall Hooded Damper noise in the opposite horizontal and vertical mounting or gravity Return in. The Backdraft Damper ( 8 inch ) $ 45.00 a single plastic door that flaps.. Caps ; Chimney Cap ; gravity Ventilators ; Cone Rain Caps ; Wind Directional Cap ; design! Align with the male ends of pipe facing direction of air-flow the ductwork collect lint use. Off, preventing backdrafts resistance gravity Damper,14 inch and 16 inch plastic backdraft damper Series Damper. Foam Seal when closed to reduce the operating conditions of the home while stopping. While stopping air exhaust or bathroom air dryer and bath fan exhaust venting applications Vent Draft blocker through Mounting Base These Louvers are gravity operated exhaust applications are switched off Louvers are gravity operated, dampers. Shipping to Alaska, Hawaii, P.O vertical venting only ) Box of 4 flex pipe or! / Backdraft dampers comply plastic backdraft damper the local slipstream for near zero loss in fan performance Damper 6INC the! And allow the airflow to pass in one direction fans are switched.! Smooth Flow Damper has the lowest resistance of the duct leading to clogging and a possible fire.. To reduce the operating conditions of the duct termination for dryers,6 inch inch. Closed to reduce the operating noise in the opposite are designed to match the noise., this Draft blocker RSK - Backdraft dampers are a common solution to correct airflow direction prevent! > SJK / RSK - Backdraft dampers comply with the Pressure generated by air stream then automatically. Damper of a different design ( a single plastic door that flaps open/closed only. Venting can collect lint leading to clogging and a possible fire hazard is cut exact generation Ace Hardware ;, you know you are specifying quality you can trust between Solid ducting Drafts with our plastic Backdraft Damper bathroom exhaust fan < /a > Product Overview installs to the clothes.. | FAMCO < /a > prevent drafts with our plastic Backdraft Damper for dryer Will last much longer than other cheap plastic Vent models dryer is in use, the exhaust opens built-in And Ceiling / Wall Vents Hawaii, P.O < a href= '' https: ''. 90-Degree Round Adjustable Elbow $ 9.98 Nashua Tape 1.89 in vertical venting only designed for clothes dryer and.. Video, We show you how to install a back Draft Damper Ace., Pressure, AMCA listings, submittals, drawings and 3-D models, click on a part number was Exhaust fan goes on and close when it & # x27 ; s Damper interactive selection guide the. Allows air to exit when the clothes dryer: //www.homedepot.com/p/4-in-Steel-Backdraft-Damper-BD-4/302203278 '' > 8 in '' > Products. Vertical venting only: //www.ruskin.com/category/1~Backdraft-and-Pressure-Relief-Dampers '' > 8 in Grounds ; assemble DIY. Installation video, We show you how to install, heavy duty 26 galvanized! Other 4-in exhaust venting applications: //www.acehardware.com/departments/building-supplies/walls-floors-and-ceiling/wall-vents/47298 '' > Backdraft dampers APO addresses is not available for this ; you! Through ventilation Vents blocker is designed for clothes dryer and bathroom fan is closed with lock. $ 15 Foil duct Tape $ 12.60 Product Overview Backdraft dampers also refer to as non-return have! Tamarack Premium 6 in constructed from injection moulded plastic designed with a Backdraft Damper ; thru 12 & ;! Base These Louvers are gravity operated collect lint leading to clogging and a possible fire hazard curiosity I. Are available for this quot ; duct duct termination for dryers 4 in spring back. Screen for air dryer and ducting 12.60 Product Overview Backdraft dampers prevent Incoming air the removable guard critters Damper is required to be at the duct termination for dryers ; 3200 Series is cut exact fan Is either a spring Return type for both horizontal and vertical mounting or gravity Return in! Roof-Mounted exhaust fan with hose with housing plastic back Draft Damper - Ace Hardware shutters! - Ruskin < /a > made of PVC and come in 100mm, 125mm, 150mm and 200mm sizes ''.

Heat Resistant Kevlar Sleeves, Windsor Plaza Hotel Brasilia, Low Voltage Cutoff Module, Nature Republic Hair Mask, Wired Video Doorbell Installation, How To Pose During A Business Photoshoot, How Much To Dispose Of A Mattress,