Aluminium alloy frame, G4 panel filter, material is synthetic fibre. Application: Some high temperature ... cleaning equipments, especially in electronic,semiconductor mechanical ,pharmaceutical ,food industries. for eg.pharmacuticals, hospital, chemistry. Frame::Galvanised steel , aluminium alloy ,stainless ... *610*1501500/22019.0H13AKF-GH13Y-B04-1501220*610*1502000/220 G4 pre Air Filter