Fan Grilles and Filters: Type - Pleated Filter; Size - Dimensions - 30.00 x 42.00 x 1.00 in.; Material - Filter - Synthetic; Material - Retainer - Beverage Board; Additional Information - Max Operating Temperature: 150 deg F, Efficiency: MERV 8; Manufacturer Series - PerfectPleat HC M8
Additional Info: Max Operating Temperature: 150 deg F, Efficiency: MERV 8