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).

 

16x20x4 MERV 11 - 3 Pack
$54.99

16x20x4 MERV 11 - 3 Pack

15-1/2 x 19-1/2 x 3-3/4

Nominal Size: 16 x 20 x 4
Actual Size: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF11-41620-3
MERV Rating: 11
# Per Case: 3
Price per Case: $54.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
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$54.99
16x20x4 MERV 8 - 3 Pack
$52.99

16x20x4 MERV 8 - 3 Pack

15-1/2 x 19-1/2 x 3-3/4

Nominal Size: 16 x 20 x 4
Actual Size: 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
$64.99

16x20x4 MERV 8 - 4 Pack

15-1/2 x 19-1/2 x 3-3/4

Nominal Size: 16 x 20 x 4
Actual Size: 15-1/2 x 19-1/2 x 3-3/4
Part #: UF8-41620-4
MERV Rating: 8
# Per Case: 4
Price per Case: $64.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$64.99