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).

 

12x24x4 MERV 11 - 6 Pack Pleated Furnace Filter
$119.99

12x24x4 MERV 11 - 6 Pack Pleated Furnace Filter

Nominal: 12x24x4
Actual: 11-3/8 x 23-3/8 x 3-5/8
Part #: UF11-41224-6
MERV: 11
Case: 6
Price: $119.99

 

$119.99