20x20x1 알루미늄 프레임 주름형 HVAC 공기 필터 맞춤형 프리 필터 제조업체

Aluminum Frame HVAC Pleated Pre-Filter Factory Direct Custom Air Filter for AHU and Ventilation Systems Type HVAC Pleated Air Filter Filter Material Polyester Synthetic Fiber / Nonwoven Frame Material Aluminum Alloy Size Customized Shape Customized Filter Grade G4 / M5 / MERV 8 / MERV 11 / ...