Min. Order Reference FOB Price
1 Piece US$25.00-60.00 / Piece
Product Description
Product Description HVAC Smoke Extraction Fireproof Damper Manual HVAC fire damper FH-70, installed in the ventilation or air-conditioning systems, usually it is open, once a fire occurs, the gas temperature of the duct arrives at 70 degrees, and then the fuse protector will be fused and the ...