... clapboard For clean rooms & final filtration system & air conditioning systems & food processing Air filter(HEPA filter,Pre-filter,media filter bag ... is used for the final filtration system, clean room, air conditioning systems, food processing and beverage.Item No.KLC-HSOEM ... 200Pa400Pa915*610*220230023.71340<=200Pa400Pa1220*610*220300031.61750<=200Pa400Pa 2012 New Type big air volume HEPA filter