... 8 X 11-1/2 HEPA AIR FILTER. with clapboard /creating a better air ,and better life air filters for high_tem. with clapboard ... high temperature resistance,Each Filters will be testing before shipments.AIR FILTER, HEPA MICROFIBER, DOP EFFICIENCY: 95 %, ACTUAL HEIGHT: 23 3/ ... WC, FINAL RECOMMENDED RESISTANCE: 2.0 IN, MAXIMUM TEMP: 200 F, AGENCY COMPLIANCE UL CLASSIFIED AS TO FLAMMABILITY, CLASS I R13458 ...