Air Filter Material Fiberglass Nominal Filter Size 8x35x1Nominal Height 8 In.Nominal Width 35 In. Nominal Depth 1 In.MERV 5Frame Type Heavy Duty ChipboardAir Flow 300 fpm Initial Resistance 0.07 in WCFinal Resistance 0.50 in WCMax. Air Flow 300 fpmMax. Temp 150 Degrees FStandards UL Class 900