... /8 X 11-1/2 HEPA AIR FILTER. with clapboard /creating a better air ,and better life air filters for high_tem. with clapboard offers high efficiency ... high temperature resistance,Each Filters will be testing before shipments.AIR FILTER, HEPA MICROFIBER, DOP EFFICIENCY: 95 %, ACTUAL HEIGHT: 23 3/8 ... : 23 3/8 IN, ACTUAL DEPTH: 11 1/2 IN, AIR FLOW: 1900 CFM, INITIAL RESISTANCE: 1.0 IN WC, FINAL ...