1.Use: Comfortable ventilation and air conditioning system of the filter 2.outer frame: aluminum alloy or galvanized, 21mm thic

1.Use: Comfortable ventilation and air conditioning system of the filter

2.outer frame: aluminum alloy or galvanized, 21mm thick flange

3.filter material: Molten spray superfine synthetic fiber filter material, "v" type filter bag structure

4.inner frame: Galvanized wire or box + galvanized clip or aluminum clip

5.efficiency: F5 (EN779): Counting the average efficiency40-60%

                     F6 (EN779): Counting the average efficiency60-80%

                     F7 (EN779): Counting the average efficiency80-90%

                    F8 (EN779): Counting the average efficiency90-95%

                    F9 (EN779): Counting the average efficiency>=95%

6.continuous operating temperature:<=90

7.resistance to wet:<=100%RH

8.suggest biggest end resistance:<=450p