... .G4 efficiency 4.Color ,White, Supply 5 mm Pre Air Filter Material Features1.Using polyester, polyamide, nylon, ... loss30Pa40Pa45Pa50Pa58Pa Final pressure loss147Pa196Pa196Pa196Pa196Pa The average collection efficiency76%80%85%88%90% Temperature resistance100ºCQuantity of dust ... prevention and controof pollution, filtration of fresh air, pre-filtering prior to medium efficiency filter efficiency filter, ...