4 Inch 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).

 

16x20x4 MERV 11 - 3 Pack Pleated Furnace Filter
$54.99

16x20x4 MERV 11 - 3 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size  of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF11-41620-3
MERV Rating: 11
Case: 3
Price: $54.99

 

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$54.99
16x20x4 MERV 8 - 3 Pack Pleated Furnace Filter
$52.99

16x20x4 MERV 8 - 3 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size  of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF8-41620-3
MERV Rating: 8
# Per Case: 3
Price per Case: $52.95

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$52.99
16x20x4 MERV 8 - 4 Pack Pleated Furnace Filter
$64.99

16x20x4 MERV 8 - 4 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF8-41620-4
MERV Rating: 8
Case: 4
Price: $64.99
* Exact Replacement for 3M Filtrete.

 

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$64.99
16x20x4 MERV 13 - 6 Pack Pleated Furnace Filter
$119.99

16x20x4 MERV 13 - 6 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF13-41620-6
MERV Rating: 13
Per Case: 6
Price: $119.99
* Exact Replacement for 3M Filtrete.

 

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$119.99
16x20x4 MERV 13 - 4 Pack Pleated Furnace Filter
$89.99

16x20x4 MERV 13 - 4 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF13-41620-4
MERV Rating: 13
Case: 4
Price: $99.95

 

*Exact Replacement for 3M Filtrete.

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$89.99
16x20x4 MERV 11 - 4 Pack Pleated Furnace Filter
$69.99

16x20x4 MERV 11 - 4 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size of  Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF11-41620-4
MERV Rating: 11
Case: 4
Price: $69.99

 

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$69.99
16x20x4 MERV 11 - 6 Pack Pleated Furnace Filter
$94.99

16x20x4 MERV 11 - 6 Pack Pleated Furnace Filter

Nominal Size of Furnace Filter: 16x20x4
Actual Size  of Furnace Filter: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF11-41620-6
MERV Rating: 11
Case: 6
Price: $94.99

 

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$94.99