Min. Order Reference FOB Price
1 Piece US$15.00-60.00 / Piece
Product Description
Product Description Manual HVAC fire damper FH-70, installed in the ventilation or air-conditioning systems, usually it is open, once fire occurs, the gas temperature of duct arrives at 70 degrees, and then the fuse protector will be fused and the damper will close under the pull of spring. It can ...