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Discover our 67 different filters sizes

2018 UPDATED furnace filter size chart.

Let us HELP you find the right filter size.

1 inch	2 inches	4 inches	5 inches

7x20x1	10x20x2	12x24x4	16x20x5
10x20x1	12x20x2	16x20x4	15 3/8 x 21 7/8 x 5 1/4
10x24x1	12x24x2	16x24x4	FC100A1003
10x25x1	14x20x2	16x25x4
12x16x1	14x25x2	18x24x4	16x25x5
12x20x1	15x20x2	20x20x4	FC100A1029
12x24x1	15x25x2	20x24x4	15 7/8 x 24 3/4 x 4 3/8
12x25x1	16x16x2	20x25x4	15 3/4 x 24 1/4 x 4 7/8
14x20x1	16x20x2	24x24x4	15 3/8 x 25 1/2 x 5 1/4
14x24x1	16x24x2		20x20x5
14x25x1	16x25x2		FC100A1011
15x20x1	18x20x2		19 7/8 x 19 7/8 x 4 3/8
15x25x1	18x24x2		19 3/4 x 20 1/2 x 4 7/8
16x16x1	18x25x2		20 1/4 x 20 3/4 x 5 1/4
16x20x1	20x20x2		20x25x5
16x24x1	20x24x2		FC100A1037
16x25x1	20x25x2		19 7/8 x 24 7/8 x 4 3/8
18x20x1	20x30x2		19 3/4 x 24 1/4 x 4 7/8
18x24x1	24x24x2		20 1/4 x 25 3/8 x 5 1/4
18x25x1	25x25x2
20x20x1
20x24x1
20x25x1
20x30x1
22x22x1
24x24x1
25x25x1