... Fiberglass Efficiency 99.99% 595*595*290*5V PVC frame HEPA(air purifier hepa filter,Deep pleated HEPA filter) ... Features: 1) High dust holding capacity2) Frame: Plastic, Aluminum alloy or Galvanized Plate3) Sturdy structure and ... according to BS3920 GB165-856) Media: glass fiber 7) Sealant: polyurethane 8) Frame: galvanized sheet metal, stainless steel, aluminum alloy9) Constructed ...