Purolator Pleated Air Filter, Hi-E 40 Series, Model HE40-STD1, 19-3/4 inch Width, 3/4 inch Depth, 21-3/4 inch Height, MERV: MERV 8, 915 cfm, 225 degree Fahrenheit, Beverage Board Frame, 20 x 22 x 1 inch Nominal Pleat, 0.27 inch wg Initial Resistance, 1 inch wg Final Resistance, Synthetic Un-Dyed Mediameter, White
The Hi-E 40 is a medium efficiency pleated filter, available inch 1", 2" or 4" depths and several standard face sizes to accommodate most system requirements. The 100% hydrophobic synthetic mediameter provides 35-40% average efficiency and nearly 95% average arrestance. The Hi-E 40 is effective as a stand-alone filter or prefilter.