Odor Removal Non-Pleated Air Filter 15x20x1 Nominal Filter Size Style - Air Filters Panel Nominal Height 15 In. Nominal Width 20 In. Nominal Depth 1 In. Air Flow 250 fpm Initial Resistance 0.48 in WC Frame Included Yes Final Resistance 1.00 in WC CCL4 Activity 60 Percent Max Air Flow 500 fpm Prefilter - Max Temp 180 Degrees F