Pre- filter

详情

 This filter offers greater efficiency and service life than disposable filters, pad, and frame system and metal washable filters.
 
The overall design of this product makes this filter the accepted choice in applications requiring high performance and extended service. These filters are suitable for variable air volume's system. Operating face velocity ranges are from 0 to **0FPM for 1" and 2", and 0 to **5FPM for 4" filters.
 
Most heating, ventilating or air condition (HVAC) system can be upgraded with the use of this cardboard pleated filter in place of existing flat panel types. The inherent strength of the filter allows for easy change out as it will not collapse, warp or bend in normal service.