... Weight 180-320 g/m2 3.Thickness,5-25mm Supply Air Conditioning Filter Media , Synthetic FIber Features1.Using polyester, polyamide, nylon, ... density by nonwoven process, it has a property of high permeability, low initial resistance and high dust collection rate2.Using ... Deutsche industry norm DIN53438F15.Can be washed repeatedly6.Can be with galvanized steel or aluminum alloy frame and also expanded ...