ABS plastic frame with water-resistant microglass media — 5-star Energy Cost Index rating, available in full-sized and under-sized box configurations for gasketed HEPA frames.
Box Filter
Features & Benefits
Strong, durable ABS plastic enclosing frame with flexible, strong handles
Unique built-in prefilter spacer eliminates unnecessary airflow blockage when a prefilter is installed on the face of the filter
Energy efficient with a 5-star Energy Cost Index (ECI) rating indicating low lifetime energy cost
Wet-laid, water-resistant micro fiberglass media designed to withstand up to 99% relative humidity
FSB (full-sized box): exact dimensions of 24" × 24" × 11½" for MagnaFrame II or other gasketed HEPA frames
USB (under-sized box): 23⅜" × 23⅜" × 11½" for side-access applications or undersized HEPA frames