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.
View full details
$54.99
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 Rating: 8
# Per Case: 4
Price per Case: $59.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$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 Rating: 8
# Per Case: 3
Price per Case: $49.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$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 Rating: 11
# Per Case: 4
Price per Case: $74.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$74.99
16x25x4 MERV 11
$54.99

16x25x4 MERV 11

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 Rating: 11
# Per Case: 3
Price per Case: $54.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$54.99
16x25x4 MERV 13 - 3 Pack
$72.95

16x25x4 MERV 13 - 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 #: UF13-41625-3
MERV Rating: 13
# Per Case: 3
Price per Case: $72.95

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$72.95
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 Rating: 13
# Per Case: 4
Price per Case: $89.95

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$89.95
20x20x4 MERV 11 - 4 Pack
$74.99

20x20x4 MERV 11 - 4 Pack

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

Nominal Size: 20 x 20 x 4
Actual Size: 19-1/2 x 19-1/2 x 3-3/4
Part #: UF11-42020-4
MERV Rating: 11
# Per Case: 4
Price per Case: $74.99

Manufactured: Canada

*Effective for dust, pollen, pet dander, bacteria and mould.
View full details
$74.99