Aluminum Frame panel filter mesh air filter large filter area low initial resistance large dust holding capacity econimical and pratical specifications: 1 The filtration material is made from non-woven fabrics ,and the synthetic fiber, it has the advantages of the large dust holding capacity ,the low pressure loss in the initial period and large air flow 2 The composite metal net can be designed into the foldaway filter, which can provide the largest filtration area for the current air,and as 5 times' filtration area as the common pand mesh. Paper frame and metal frame are available , which is convenient for replace; less purchasing expense 3 The moisture-proof 100% 4 Temperature resistance 80-100°C 5 The class of the filtration :G1,G2,G3,G4 F5 F6 F7 F8 Application: Can be used as pre air filter