Air Handler HEPA Air Filter: 11 3/8 in x 23 3/8 in x 11 1/2 in Actual Filter Size, 554 cfm Air Flow @ 300 fpm

95% DOP HEPA-grade air filters capture airborne contaminants more efficiently than standard non-HEPA air filters but are less efficient than other types of HEPA air filters. They are suitable for applications where HEPA-filtered air is not required. Using the DOP test method, these filters are rated as removing particles as small as 0.30 microns with 95% efficiency.

HEPA and ULPA air filters are installed in HVAC systems to remove the maximum amount of contaminants from the air stream for applications that require very clean air. This maximizes indoor air quality and keeps the contaminants from building up in the equipment and damaging it. HEPA and ULPA filters provide more effective filtration than other styles of air filters and are commonly used in areas that require very high levels of contamination control, such as clean rooms, hospitals, pharmaceutical facilities, data centers, laboratories, and food processing plants. They have a box construction.