Check the listing for details. Bathroom ceiling Ventilation Backdraft air Damper AirScape with bigger bracket. Color: White, Condition: New. Listed at 84.00 USD. Product OverviewProduct name : Bathroom ceiling Ventilation Back Draft Damper with Bigger Bracket Brand name : AirScape Manufacturer : PETRICHOR SWAN.CO., LTDOrigin : South Korea Color :White SpecificationProduct Size : 217(W) x 217(L) x 38(H) mmPackage Size : 240(W) x 225(L) x 45(H) mmBigger Bracket Size : 330(W) x 330(L) x 35(H) mmBigger Bracket Package Size : 350(W) x 350(L) x 350(H) mmNet weight : 970gGross weight :1,020gProduct includes : 1 cover + 1 body + 1 bracket + 4 packs of ball type deodorant(Red clay ball) + 1 bigger bracket Features AirScape damper prevents backdraft air through bathroom ventilators.It's for apartment bathrooms which are connected neighbor's bathrooms. It helps to block the bad smell(cigarette) and sounds from neighbor's bathrooms.Red clay ball deodorant is made from natural material. It gives deodorization and dehumidification. It has the certified test report that it deodorizes formaldehyde, Trimetallamine, ammonia, hydrogen sulfide.Easy installation, No needs electricity. Caution Before order this item, please check your bathroom ventilator!1) Ventilator should be in normal condition. If it's too old or bad quality ventilator, AirScape may not work properly.2) Ventilator size is more than 198 x 198 mm and less than 302 x 302 mm3) The bathroom ceiling should be plastic and flat.4) Before installation, the attachment site should be clean and dried.