Photo 1 of 20x20x1 MERV 11 ( MPR 1000, FPR 7-8 ) Pleated 1" Air Filters for AC and Furnace. 4 PACK. Exact Size: 19-1/2 x 19-1/2 x 3/4

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Photo 1 of 20x20x1 MERV 11 ( MPR 1000, FPR 7-8 ) Pleated 1" Air Filters for AC and Furnace. 4 PACK. Exact Size: 19-1/2 x 19-1/2 x 3/4 Photo 2 of 20x20x1 MERV 11 ( MPR 1000, FPR 7-8 ) Pleated 1" Air Filters for AC and Furnace. 4 PACK. Exact Size: 19-1/2 x 19-1/2 x 3/4