Standard 1 Inch Furnace Filter Sizes

10 x 20 x 1
12 x 20 x 1
12 x 24 x 1
14 x 20 x 1
14 x 24 x 1
14 x 25 x 1
15 x 20 x 1
16 x 20 x 1
16 x 24 x 1
16 x 25 x 1
18 x 20 x 1
18 x 24 x 1
18 x 25 x 1
20 x 20 x 1
20 x 24 x 1
20 x 25 x 1
20 x 30 x 1
24 x 24 x 1
24 x 30 x 1
25 x 25 x 1

Can’t find your exact furnace filter size? Try searching for it below like 16x25x1:

If you still can’t find your size, we make custom filters as well, please click here to make a request.

Standard 2 Inch Furnace Filter Sizes

10 x 20 x 2
12 x 20 x 2
12 x 24 x 2
14 x 20 x 2
14 x 25 x 2
15 x 20 x 2
16 x 20 x 2
16 x 24 x 2
16 x 25 x 2
18 x 20 x 2
18 x 24 x 2
18 x 25 x 2
20 x 20 x 2
20 x 24 x 2
20 x 25 x 2
20 x 30 x 2
24 x 24 x 2
25 x 25 x 2

Can’t find your exact furnace filter size? Try searching for it below like 16x25x2:

If you still can’t find your size, we make custom filters as well, please click here to make a request.

Standard 4 Inch Furnace Filter Sizes

12 x 24 x 4
16 x 20 x 4
16 x 25 x 4
16 x 24 x 4
18 x 24 x 4
20 x 20 x 4
20 x 25 x 4
20 x 24 x 4
24 x 24 x 4

Can’t find your exact furnace filter size? Try searching for it below like 16x25x4:

If you still can’t find your size, we make custom filters as well, please click here to make a request.

PUREFILTERS 5 INCH FILTERS COMING SOON

We currently only carry other branded 5-Inch filters. Try searching for it below like 16x25x5 or Lennox X6670:

If you still can’t find your size, we make custom filters as well, please click here to make a request.

PUREFILTERS 6 INCH FILTERS COMING SOON

We currently only carry other branded 6-Inch filters. Try searching for it below like 16x25x6 or Lennox X6670:

If you still can’t find your size, we make custom filters as well, please click here to make a request.