4 Inch HVAC Air Filters

20x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

20x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack
24x24x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

24x24x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Nordic Pure 24x24x4 MERV 8 Pleated Plus Carbon air filters are made of a dual...
$48.88
1 Pack
24x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

24x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Nordic Pure 24x24x4 MERV 12 Pleated Plus Carbon air filters are made of a dua...
$49.99
1 Pack
24x24x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

24x24x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Nordic Pure 24x24x4 MERV 10 Pleated Plus Carbon air filters are made of a dua...
$49.43
1 Pack
24x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

24x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Nordic Pure Pure Carbon Pleated Odor Reduction MERV 8 Air Filters is made wit...
$58.88
1 Pack
24x24x4 (3 5/8) Pleated MERV 8 Air Filters

24x24x4 (3 5/8) Pleated MERV 8 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 8 are made of electrostatically ...
$44.43
1 Pack
24x24x4 (3 5/8) Pleated MERV 7 Air Filters

24x24x4 (3 5/8) Pleated MERV 7 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 7 are made of electrostatically ...
$43.88
1 Pack
24x24x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

24x24x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Nordic Pure 24x24x4 MERV 7 Plus Carbon air filters are made of electrostatica...
$46.66
1 Pack
24x24x4 (3 5/8) Pleated MERV 15 Air Filters

24x24x4 (3 5/8) Pleated MERV 15 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 15 are made of electrostatically...
$63.33
1 Pack
24x24x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

24x24x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Nordic Pure 24x24x4 MERV 15 Plus Carbon air filters are made of electrostatic...
$73.32
1 Pack
24x24x4 (3 5/8) Pleated MERV 14 Air Filters

24x24x4 (3 5/8) Pleated MERV 14 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 14 are made of electrostatically...
$59.99
1 Pack
24x24x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

24x24x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Nordic Pure 24x24x4 MERV 14 Plus Carbon air filters are made of electrostatic...
$67.77
1 Pack
24x24x4 (3 5/8) Pleated MERV 13 Air Filters

24x24x4 (3 5/8) Pleated MERV 13 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 13 are made of electrostatically...
$47.77
1 Pack
24x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

24x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Nordic Pure 24x24x4 MERV 13 Plus Carbon air filters are made of electrostatic...
$52.21
1 Pack
24x24x4 (3 5/8) Pleated MERV 12 Air Filters

24x24x4 (3 5/8) Pleated MERV 12 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 12 are made of electrostatically...
$45.54
1 Pack
24x24x4 (3 5/8) Pleated MERV 10 Air Filters

24x24x4 (3 5/8) Pleated MERV 10 Air Filters

Nordic Pure 24x24x4 Pleated Air Filters MERV 10 are made of electrostatically...
$44.99
1 Pack
20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Packs

20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Packs

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$63.32
20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$42.21
1 Pack
20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$81.10
2 Pack
20x25x4 (3 5/8) Pleated MERV 15 Air Filters

20x25x4 (3 5/8) Pleated MERV 15 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$59.99
1 Pack
20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

20x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$67.77
1 Pack
20x25x4 (3 5/8) Pleated MERV 14 Air Filters

20x25x4 (3 5/8) Pleated MERV 14 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$55.54
1 Pack
20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$63.32
1 Pack
20x25x4 (3 5/8) Pleated MERV 10 Air Filters

20x25x4 (3 5/8) Pleated MERV 10 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$37.77
1 Pack
20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

20x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.43
1 Pack
20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

20x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.99
1 Pack
20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$74.43
2 Pack
20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$49.99
1 Pack
20x20x4 (3 5/8) Pleated MERV 8 Air Filters

20x20x4 (3 5/8) Pleated MERV 8 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.10
1 Pack
20x20x4 (3 5/8) Pleated MERV 7 Air Filters

20x20x4 (3 5/8) Pleated MERV 7 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$35.54
1 Pack
20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack
20x20x4 (3 5/8) Pleated MERV 15 Air Filters

20x20x4 (3 5/8) Pleated MERV 15 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$55.54
1 Pack
20x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

20x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$63.32
1 Pack
20x20x4 (3 5/8) Pleated MERV 14 Air Filters

20x20x4 (3 5/8) Pleated MERV 14 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$52.21
1 Pack
20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

20x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$58.88
1 Pack
20x20x4 (3 5/8) Pleated MERV 13 Air Filters

20x20x4 (3 5/8) Pleated MERV 13 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$44.43
1 Pack
20x20x4 (3 5/8) Pleated MERV 12 Air Filters

20x20x4 (3 5/8) Pleated MERV 12 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$37.21
1 Pack
20x20x4 (3 5/8) Pleated MERV 10 Air Filters

20x20x4 (3 5/8) Pleated MERV 10 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.66
1 Pack
16x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

16x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$74.43
2 Pack
16x25x4 (3 5/8) Pleated MERV 7 Air Filters

16x25x4 (3 5/8) Pleated MERV 7 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.10
1 Pack
16x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

16x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack
16x25x4 (3 5/8) Pleated MERV 15 Air Filters

16x25x4 (3 5/8) Pleated MERV 15 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$56.66
1 Pack
16x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

16x25x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$322.21
6 Pack
16x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

16x20x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack
16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.99
1 Pack
16x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

16x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.43
1 Pack
16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$72.21
2 Pack
16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$47.77
1 Pack
16x20x4 (3 5/8) Pleated MERV 8 Air Filters

16x20x4 (3 5/8) Pleated MERV 8 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$33.88
1 Pack
16x20x4 (3 5/8) Pleated MERV 7 Air Filters

16x20x4 (3 5/8) Pleated MERV 7 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$33.32
1 Pack
16x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

16x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.32
1 Pack
16x20x4 (3 5/8) Pleated MERV 15 Air Filters

16x20x4 (3 5/8) Pleated MERV 15 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$53.32
1 Pack
16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$61.10
1 Pack
16x20x4 (3 5/8) Pleated MERV 14 Air Filters

16x20x4 (3 5/8) Pleated MERV 14 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$49.99
1 Pack
16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$56.66
1 Pack
16x20x4 (3 5/8) Pleated MERV 13 Air Filters

16x20x4 (3 5/8) Pleated MERV 13 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.66
1 Pack
16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
16x20x4 (3 5/8) Pleated MERV 12 Air Filters

16x20x4 (3 5/8) Pleated MERV 12 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$34.99
1 Pack
16x20x4 (3 5/8) Pleated MERV 10 Air Filters

16x20x4 (3 5/8) Pleated MERV 10 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$34.43
1 Pack
12x24x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

12x24x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Nordic Pure 12x24x4 MERV 8 Pleated Plus Carbon air filters are made of a dual...
$37.77
1 Pack
12x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

12x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Nordic Pure 12x24x4 MERV 12 Pleated Plus Carbon air filters are made of a dua...
$39.99
1 Pack
12x24x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

12x24x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Nordic Pure 12x24x4 MERV 10 Pleated Plus Carbon air filters are made of a dua...
$39.99
1 Pack
12x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

12x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters

Nordic Pure Pure Carbon Pleated Odor Reduction MERV 8 Air Filters is made wit...
$72.21
2 Pack
12x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

12x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Nordic Pure Pure Carbon Pleated Odor Reduction MERV 8 Air Filters is made wit...
$49.99
1 Pack
12x24x4 (3 5/8) Pleated MERV 8 Air Filters

12x24x4 (3 5/8) Pleated MERV 8 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 8 are made of electrostatically ...
$33.32
1 Pack
12x24x4 (3 5/8) Pleated MERV 7 Air Filters

12x24x4 (3 5/8) Pleated MERV 7 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 7 are made of electrostatically ...
$32.77
1 Pack
12x24x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

12x24x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon

Nordic Pure 12x24x4 MERV 7 Plus Carbon air filters are made of electrostatica...
$38.88
1 Pack
12x24x4 (3 5/8) Pleated MERV 15 Air Filters

12x24x4 (3 5/8) Pleated MERV 15 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 15 are made of electrostatically...
$49.99
1 Pack
12x24x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

12x24x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon

Nordic Pure 12x24x4 MERV 15 Plus Carbon air filters are made of electrostatic...
$55.54
1 Pack
12x24x4 (3 5/8) Pleated MERV 14 Air Filters

12x24x4 (3 5/8) Pleated MERV 14 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 14 are made of electrostatically...
$46.66
1 Pack
12x24x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

12x24x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Nordic Pure 12x24x4 MERV 14 Plus Carbon air filters are made of electrostatic...
$53.32
1 Pack
12x24x4 (3 5/8) Pleated MERV 13 Air Filters

12x24x4 (3 5/8) Pleated MERV 13 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 13 are made of electrostatically...
$38.88
1 Pack
12x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

12x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Nordic Pure 12x24x4 MERV 13 Plus Carbon air filters are made of electrostatic...
$44.43
1 Pack
12x24x4 (3 5/8) Pleated MERV 12 Air Filters

12x24x4 (3 5/8) Pleated MERV 12 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 12 are made of electrostatically...
$35.54
1 Pack
12x24x4 (3 5/8) Pleated MERV 10 Air Filters

12x24x4 (3 5/8) Pleated MERV 10 Air Filters

Nordic Pure 12x24x4 Pleated Air Filters MERV 10 are made of electrostatically...
$34.43
1 Pack
16x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

16x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.43
1 Pack
16x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

16x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
16x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

16x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.99
1 Pack
16x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

16x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$48.88
1 Pack
16x25x4 (3 5/8) Pleated MERV 8 Air Filters

16x25x4 (3 5/8) Pleated MERV 8 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.66
1 Pack
16x25x4 (3 5/8) Pleated MERV 14 Air Filters

16x25x4 (3 5/8) Pleated MERV 14 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$52.21
1 Pack
16x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

16x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$59.99
1 Pack
16x25x4 (3 5/8) Pleated MERV 13 Air Filters

16x25x4 (3 5/8) Pleated MERV 13 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack
16x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

16x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$44.43
1 Pack
16x25x4 (3 5/8) Pleated MERV 12 Air Filters

16x25x4 (3 5/8) Pleated MERV 12 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$37.77
1 Pack
16x25x4 (3 5/8) Pleated MERV 10 Air Filters

16x25x4 (3 5/8) Pleated MERV 10 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$37.21
1 Pack
20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$39.99
1 Pack
20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$54.43
1 Pack
20x25x4 (3 5/8) Pleated MERV 8 Air Filters

20x25x4 (3 5/8) Pleated MERV 8 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$37.21
1 Pack
20x25x4 (3 5/8) Pleated MERV 7 Air Filters

20x25x4 (3 5/8) Pleated MERV 7 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$36.66
1 Pack
20x25x4 (3 5/8) Pleated MERV 13 Air Filters

20x25x4 (3 5/8) Pleated MERV 13 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$41.10
1 Pack
20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$45.54
1 Pack
20x25x4 (3 5/8) Pleated MERV 12 Air Filters

20x25x4 (3 5/8) Pleated MERV 12 Air Filters

Important Note:  Almost ALL furnace filters have a different "actual size" th...
$38.88
1 Pack