HEPA Filter, Air Filter, FFU manufacturer / supplier in China, offering G3 G4 Cardboard Frame Primary Air Filters Not Easy to Deform- 290, 495, 595mm Length-for Extension The Life of Expensive High-Efficiency Filter, Easy to Install in Wide Range of HVAC Systems - 22, 45, 95mm Thickness - Max. Relative Humidity: 99% Rh Rec, Extended Surface Pleated Panel Filters with Metal Backing - 22, 45, 95mm Thickness-Air Flow (1480m³ /h) for Commercial and so on.
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