Product Name: HVAC Air Duct Accesorier Fireproof Smoke Damper Model NO.: FHF Certification: ISO9001 ventilation mode: natural ventilation Trademark: Jianpin Transport Package: 10PCS/CTN Origin: Guangdong, China HS Code: 7616999000 Product Description DescriptionMaterial : galvanized steel sheetsize: (WxH) according to air duct sizeFeatures:Usually is open, when on fire, smoke sensors output electric signal (DC24V) through control center, and the electromagnet in the actuator acts, damper is automatically closed and outputs the close electric signal.Damper can be manually closed ans reset, or to be closed when fuse numbered 70°C.The damper has six gears of regulating air voulume damper .You must manually reset it ,after the damper acting.PACKING1. Inner bag and outer strong cartons2. 5pcs/ctn with damper3. 10pcs/ctn without damperDelivery Detail25 days after paymentOurCompanyFoshan Jianpin Air Conditioning Tech Co., Ltd( Previous Foshan Nanhai Jianpin Air Conditiong Factory), is not only a professional manufacturerand supplier of all kinds of HAVC (heating, ventilation and air conditioning) parts, but also an one-stop service provider. only the best is our mission.Our main products and services as following: air diffusers,grilles and registers-All kinds of aluminium/metal/ ABS/ stainless stell/ wooden air diffusers and sir grilles, such as ceiling diffusers, floor registers, door grilles, egg crate grilles, side wall registers, square/round air diffusers, deflection grilles,return air diffusers, jet diffusers,swirl diffusers and linear slot diffusers, etc.We have the advanced technology and production lines. What's more, we provide the most professional and efficient services. We passes the ISO9001:2008 certification. Now our products and services have been accepted by clients from many areas and countries like Europe, Southeast Asia, North America, Middle East, New Zealand and Australia, etc, which are still spreading.Trade & MarketMain MarketsTotal Revenue(%)Domestic Market25.00%Central America10.00%South Asia10.00%North America10.00%Mid East10.00%Oceania10.00%South America10.00%Western Europe5.00%Eastern Asia5.00%Northern Europe5.00%Exhibition