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Rigid Box Filters
Camfil Durafil
ES3 Box
ES3 Box
Premium 5-star V-style filter with the lowest resistance to airflow — straight box style design with FSB and USB configurations for gasketed HEPA frame applications.
MERV 14 / 16 — MERV-A Rated
Features & Benefits
- Strong, durable ABS plastic enclosing frame with flexible, strong handles
- Built-in prefilter spacer eliminates unnecessary airflow blockage when a prefilter is installed on the face of the filter
- 5-Star Energy Cost Index (ECI) rating for lowest lifetime energy costs
- 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
- Available in MERV 14/14A and 16/16A ratings
- See product sheet for available configurations
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