Photo 1 of (6 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.50" x 17.50" x 0.75")

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Photo 1 of (6 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.50" x 17.50" x 0.75")Photo 2 of (6 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.50" x 17.50" x 0.75")Photo 3 of (6 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.50" x 17.50" x 0.75")Photo 4 of (6 Pack) 18x18x1 Furnace Air Filters, MPR 1900 & FPR 10, MERV 13 Pleated Air Filter (Actual Size: 17.50" x 17.50" x 0.75")