20x20x1, MERV 8, 6 Pack | 16x25x1, MERV 8, 6 Pack | 20x25x1, MERV 8, 6 Pack | 20x25x4, MERV 8, 6 Pack | 12x12x1, MERV 8, 6 Pack | 16x20x1, MERV 8, 6 Pack | |
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Compatible Devices: AC and Furnace | ? | ? | ? | ? | ? | ? |
Thickness | 1 inch | 1 inch | 1 inch | 4 inch | 1 inch | 1 inch |
Actual size | 19 3/4" x 19 3/4" x 3/4" | 15 3/4" x 24 3/4" x 3/4" | 19 3/4" x 24 3/4" x 3/4" | 9 1/2" x 24 1/2" x 3 3/4" | 11 3/4" x 11 3/4" x 3/4" | 15 3/4" x 19 3/4" x 3/4" |
When to replace | 2 - 3 months | 2 - 3 months | 2 - 3 months | 3 - 6 months | 2 - 3 months | 2 - 3 months |
Comparable to: MPR 600 & FPR 5 | ? | ? | ? | ? | ? | ? |