... & light weight 3>Certificate:ISO9001:2008 Air Purifier Cartridge HEPA Filter Production Description:1) Frames: Paper,Aluminum or galvanized frame2) ... 0.3 microns particles5) Max air resistance : 125Pa6) Max. air flow: 32% of the rated air flow7) Temp. Resistance :120° ... , dust mites, and other allergens4.ISO, SGS approvalHepa air filter Application:1)air HFPA purifier, air cleaner, vacuum cleaner,etc ...