4" Furnace Filters

4" replacement furnace filters are available in many standard and non-standard sizes. Simply select your size from the drop down box below to choose your filter size. Keep in mind that length and width are reversible (i.e. a 15x20x4 is the same as a 20x15x4).

 

16x25x4 MERV 8 - 4 Pack
$59.99

16x25x4 MERV 8 - 4 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF8-41625-4
MERV: 8
Case: 4
Price: $59.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$59.99
16x25x4 MERV 8 - 3 Pack
$49.99

16x25x4 MERV 8 - 3 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF8-41625-3
MERV: 8
Case: 3
Price: $49.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$49.99
16x25x4 Merv 11 - 4 Pack
$74.99

16x25x4 Merv 11 - 4 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF11-41625-4
MERV: 11
Case: 4
Price: $74.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.

Exact Replacement for 3M Filtrete Furnace Filter.

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$74.99
16x25x4 MERV 11 - 3 Pack
$54.99

16x25x4 MERV 11 - 3 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF11-4162511-3
MERV: 11
Case: 3
Price: $59.99

 

* Exact Replacement for 3M Filtrete.
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$54.99
16x25x4 MERV 13 - 4 Pack
$89.95

16x25x4 MERV 13 - 4 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF13-41625-4
MERV: 13
Case: 4
Price: $89.95

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$89.95
16x25x4 MERV 11 - 6 Pack
$104.99

16x25x4 MERV 11 - 6 Pack

15-1/2 x 24-1/2 x 3-3/4

Nominal Size: 16 x 25 x 4
Actual Size: 15-1/2 x 24-1/2 x 3-3/4
Part #: UF11-41625-6
MERV: 11
Case: 6
Price: $109.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$104.99