... filtration in the air handling or air condition system.Type:Pocket Filter Synthetic used for pre-filtration: G2, G3 & G4Pocket Filter ... for fine-filtration: F5, F6, F7, F8, F9Kind of pocket filter media:Washable pocket filter synthetic: G2, G3, G4, F5 Fire-retardant ... pocket filter synthetic: G2, G3, G4, F5, F6, F7, F8, F9Temperature ...