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Furnace Air Filters
Viewing Furnace Air Filters
NaturalAire 84858.011224 Pleated Air Filter, 24 x 12 x 1, 8 MERV, Clay Frame, 90 Day
Flanders
NaturalAire 84858.011224 Pleated Air Filter, 24 x 12 x 1, 8 MERV, Clay Frame, 90 Day
Sku: 11120128
13 Available at San Marcos
$6.49
 
EZ Flow II 10055.011224 Furnace Air Filter, 24 x 12 x 1, 4 MERV, Chipboard Frame, 30 Day
Flanders
EZ Flow II 10055.011224 Furnace Air Filter, 24 x 12 x 1, 4 MERV, Chipboard Frame, 30 Day
Sku: 11120040
15 Available at San Marcos
$3.69
 
220-700-051 Panel Air Filter, 20 x 20 x 1, Chipboard Frame, 30 Day
AAF
220-700-051 Panel Air Filter, 20 x 20 x 1, Chipboard Frame, 30 Day
Sku: 11120008
16 Available at San Marcos
$4.79
 
2001DC-6 Electrostatic Air Filter, 25 x 16 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2001DC-6 Electrostatic Air Filter, 25 x 16 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 36090110
4 Available at San Marcos
$22.99
 
84858.01202 Pleated Air Filter, 24 x 20 x 1, 8 MERV, 90 Day
Flanders
84858.01202 Pleated Air Filter, 24 x 20 x 1, 8 MERV, 90 Day
Sku: 36090302
7 Available at San Marcos
$15.49
 
SM1006 Air Filter, 30 x 20 x 1, 4 MERV, Synthetic Roll Frame, 12 month
NaturalAire
SM1006 Air Filter, 30 x 20 x 1, 4 MERV, Synthetic Roll Frame, 12 month
Sku: 11120076
7 Available at San Marcos
$9.49
 
9802-4 Air Filter, 20 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Filtrete
9802-4 Air Filter, 20 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Sku: 11120047
5 Available at San Marcos
$15.99
 
120301 Panel Air Filter, 30 x 20 x 1, Chipboard Frame, 30 Day
AAF
120301 Panel Air Filter, 30 x 20 x 1, Chipboard Frame, 30 Day
Sku: 11120200
11 Available at San Marcos
$4.99
 
9803-4 Air Filter, 25 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Filtrete
9803-4 Air Filter, 25 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Sku: 11120049
3 Available at San Marcos
$15.99
 
9801-4 Air Filter, 25 x 16 x 1, 11 MERV, 1000 MPR, 90 Day
Filtrete
9801-4 Air Filter, 25 x 16 x 1, 11 MERV, 1000 MPR, 90 Day
Sku: 36090116
4 Available at San Marcos
$15.99
 
220-600-051 Panel Air Filter, 25 x 16 x 1, Chipboard Frame, 30 Day
AAF
220-600-051 Panel Air Filter, 25 x 16 x 1, Chipboard Frame, 30 Day
Sku: 11120012
28 Available at San Marcos
$4.79
 
9820DC-6 Washable Air Filter, 24 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White, 90 Day
Filtrete
9820DC-6 Washable Air Filter, 24 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White, 90 Day
Sku: 36090306
4 Available at San Marcos
$15.99
 
84858.011425 Dirt Pleated Standard Capacity Air Filter, 25 x 14 x 1, 8 MERV, 90 Day
NaturalAire
84858.011425 Dirt Pleated Standard Capacity Air Filter, 25 x 14 x 1, 8 MERV, 90 Day
Sku: 11120108
12 Available at San Marcos
$6.49
 
NaturalAire 84858.01162 Pleated Air Filter, 20 x 16 x 1, 8 MERV, Clay Frame, 90 Day
Flanders
NaturalAire 84858.01162 Pleated Air Filter, 20 x 16 x 1, 8 MERV, Clay Frame, 90 Day
Sku: 11120048
4 Available at San Marcos
$6.49
 
2024DC-6 Electrostatic Air Filter, 30 x 14 x 1, 11 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Filtrete
2024DC-6 Electrostatic Air Filter, 30 x 14 x 1, 11 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Sku: 36090318
2 Available at San Marcos
$20.99
 
2020DC-6 Electrostatic Air Filter, 24 x 12 x 1, 11 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Filtrete
2020DC-6 Electrostatic Air Filter, 24 x 12 x 1, 11 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Sku: 36090314
3 Available at San Marcos
$20.99
 
2010DC-6 Electrostatic Air Filter, 12 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Microfiber Filter Media, 90 Day
Filtrete
2010DC-6 Electrostatic Air Filter, 12 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Microfiber Filter Media, 90 Day
Sku: 3690124
3 Available at San Marcos
$20.99
 
B1-2020-8-12 Air Filter, 20 in L, 20 in W, 8 MERV, 600 MPR, 12 month
BestAir
B1-2020-8-12 Air Filter, 20 in L, 20 in W, 8 MERV, 600 MPR, 12 month
Sku: 11120056
29 Available at San Marcos
$6.49
 
NaturalAire 87357.01203 Pleated Furnace Air Filter, 25 x 20 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Flanders
NaturalAire 87357.01203 Pleated Furnace Air Filter, 25 x 20 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Sku: 36900106
4 Available at San Marcos
$15.99
 
2028DC-4 Air Filter, 18 in L, 30 in W, 12 MERV, 1500 um MPR, Cardboard Frame
Filtrete
2028DC-4 Air Filter, 18 in L, 30 in W, 12 MERV, 1500 um MPR, Cardboard Frame
Sku: 36090111
3 Available at San Marcos
$20.99
 
DP02DC-4 Electrostatic Air Filter, 20 x 20 x 4, 97 % Filter Efficiency, Pleated Fabric Filter Media, 90 Day
Filtrete
DP02DC-4 Electrostatic Air Filter, 20 x 20 x 4, 97 % Filter Efficiency, Pleated Fabric Filter Media, 90 Day
Sku: 36090146
5 Available at San Marcos
$36.99
 
2000DC-6 Electrostatic Air Filter, 20 x 16 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2000DC-6 Electrostatic Air Filter, 20 x 16 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 36090108
4 Available at San Marcos
$20.99
 
2022DC-6 Electrostatic Air Filter, 30 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2022DC-6 Electrostatic Air Filter, 30 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 11120258
3 Available at San Marcos
$20.99
 
DP01DC-4 Electrostatic Air Filter, 25 x 16 x 4, 12 MERV, 97 % Filter Efficiency, Microfiber Filter Media, 90 Day
Filtrete
DP01DC-4 Electrostatic Air Filter, 25 x 16 x 4, 12 MERV, 97 % Filter Efficiency, Microfiber Filter Media, 90 Day
Sku: 36090144
1 Available at San Marcos
$36.99
 
9800-4 Air Filter, 20 x 16 x 1, 11 MERV, 1000 MPR, 90 Day
Filtrete
9800-4 Air Filter, 20 x 16 x 1, 11 MERV, 1000 MPR, 90 Day
Sku: 11120045
8 Available at San Marcos
$15.99
 
2002DC-6 Electrostatic Air Filter, 20 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2002DC-6 Electrostatic Air Filter, 20 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 36090112
4 Available at San Marcos
$20.49
 
84858.012030 Pleated Air Filter, 20 x 30 x 1, 8 MERV, 90 Day
Flanders
84858.012030 Pleated Air Filter, 20 x 30 x 1, 8 MERV, 90 Day
Sku: 11120224
13 Available at San Marcos
$8.99
 
UA02DC-6 Air Filter, 20 x 20 x 1, 12 MERV, 93 % Filter Efficiency, Microfiber Filter Media, 90 Day
Filtrete
UA02DC-6 Air Filter, 20 x 20 x 1, 12 MERV, 93 % Filter Efficiency, Microfiber Filter Media, 90 Day
Sku: 36090154
4 Available at San Marcos
$24.49
 
NaturalAire 87357.01163 Pleated Furnace Air Filter, 25 x 16 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Flanders
NaturalAire 87357.01163 Pleated Furnace Air Filter, 25 x 16 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Sku: 36900102
2 Available at San Marcos
$15.99
 
84858.011212 Pleated Air Filter, 12 x 12 x 1, 8 MERV, 90 Day
Flanders
84858.011212 Pleated Air Filter, 12 x 12 x 1, 8 MERV, 90 Day
Sku: 11120125
7 Available at San Marcos
$6.49
 
220-500-051 Panel Air Filter, 20 x 16 x 1, Chipboard Frame, 30 Day
AAF
220-500-051 Panel Air Filter, 20 x 16 x 1, Chipboard Frame, 30 Day
Sku: 11120016
59 Available at San Marcos
$3.69
 
9824DC-6 Air Filter, 30 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White, 90 Day
Filtrete
9824DC-6 Air Filter, 30 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White, 90 Day
Sku: 36090312
4 Available at San Marcos
$15.99
 
DP03DC-4 Electrostatic Air Filter, 25 x 20 x 4, 97 % Filter Efficiency, Microfiber Filter Media, 90 Day
Filtrete
DP03DC-4 Electrostatic Air Filter, 25 x 20 x 4, 97 % Filter Efficiency, Microfiber Filter Media, 90 Day
Sku: 36090118
5 Available at San Marcos
$36.99
 
84858.01163 Pleated Air Filter, 25 x 16 x 1, 8 MERV, 90 Day
Flanders
84858.01163 Pleated Air Filter, 25 x 16 x 1, 8 MERV, 90 Day
Sku: 11120052
12 Available at San Marcos
$6.49
 
UA01DC-6 Air Filter, 25 x 16 x 1, 12 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Filtrete
UA01DC-6 Air Filter, 25 x 16 x 1, 12 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Sku: 36090152
5 Available at San Marcos
$24.99
 
NaturalAire 84858.01203 Pleated Air Filter, 25 x 20 x 1, 8 MERV, Clay Frame, 90 Day
Flanders
NaturalAire 84858.01203 Pleated Air Filter, 25 x 20 x 1, 8 MERV, Clay Frame, 90 Day
Sku: 11120060
6 Available at San Marcos
$7.49
 
2012DC-6 Air Filter, Electrostatic, Ultra Allergen Reduction, 1 in Thick, 24 in L, 24 in W, 11 MERV, 90 Day
Filtrete
2012DC-6 Air Filter, Electrostatic, Ultra Allergen Reduction, 1 in Thick, 24 in L, 24 in W, 11 MERV, 90 Day
Sku: 36090232
4 Available at San Marcos
$20.99
 
NaturalAire 84858.01143 Pleated Air Filter, 30 x 14 x 1, 8 MERV, Clay Frame, 90 Day
Flanders
NaturalAire 84858.01143 Pleated Air Filter, 30 x 14 x 1, 8 MERV, Clay Frame, 90 Day
Sku: 11120029
8 Available at San Marcos
$6.49
 
NaturalAire 84858.01242 Pleated Air Filter, 24 x 24 x 1, 8 MERV, Clay Frame, 90 Day
Flanders
NaturalAire 84858.01242 Pleated Air Filter, 24 x 24 x 1, 8 MERV, Clay Frame, 90 Day
Sku: 11120118
17 Available at San Marcos
$7.49
 
9822DC-6 Micro Allergen Reduction Filter, 30 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Filtrete
9822DC-6 Micro Allergen Reduction Filter, 30 x 20 x 1, 11 MERV, 1000 MPR, 90 Day
Sku: 3690120
2 Available at San Marcos
$15.99
 
EZ Flow II 10055.012025 Air Filter, Flat Panel, 1 in Thick, 20 in L, 25 in W, 4 MERV, Chipboard Frame, 30 Day
Flanders
EZ Flow II 10055.012025 Air Filter, Flat Panel, 1 in Thick, 20 in L, 25 in W, 4 MERV, Chipboard Frame, 30 Day
Sku: 11120004
13 Available at San Marcos
$4.99
 
UA03DC-6 Air Filter, 25 x 20 x 1, 12 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Filtrete
UA03DC-6 Air Filter, 25 x 20 x 1, 12 MERV, Microfiber Filter Media, Cardboard Frame, 90 Day
Sku: 36090156
3 Available at San Marcos
$24.99
 
2003DC-6 Electrostatic Air Filter, 25 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2003DC-6 Electrostatic Air Filter, 25 x 20 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 36090114
2 Available at San Marcos
$20.99
 
B1-1420-8-12 Air Filter, 20 in L, 14 in W, 8 MERV, 600 MPR, 12 month
BestAir
B1-1420-8-12 Air Filter, 20 in L, 14 in W, 8 MERV, 600 MPR, 12 month
Sku: 11120104
9 Available at San Marcos
$6.49
 
9810DC-6 Air Filter, 12 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Microfiber Filter Media, White, 90 Day
Filtrete
9810DC-6 Air Filter, 12 x 12 x 1, 11 MERV, 90 % Filter Efficiency, Microfiber Filter Media, White, 90 Day
Sku: 3690122
4 Available at San Marcos
$15.99
 
112121 Panel Air Filter, 12 x 12 x 1, Chipboard Frame, 30 Day
AAF
112121 Panel Air Filter, 12 x 12 x 1, Chipboard Frame, 30 Day
Sku: 11120214
10 Available at San Marcos
$3.69
 
NaturalAire 87357.01202 Pleated Furnace Air Filter, 20 x 20 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Flanders
NaturalAire 87357.01202 Pleated Furnace Air Filter, 20 x 20 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Sku: 36900104
16 Available at San Marcos
$15.99
 
9804DC-6 Micro Air Filter, 25 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media, 90 Day
Filtrete
9804DC-6 Micro Air Filter, 25 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media, 90 Day
Sku: 11120050
5 Available at San Marcos
$15.99
 
NaturalAire 87357.01162 Pleated Furnace Air Filter, 20 x 16 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Flanders
NaturalAire 87357.01162 Pleated Furnace Air Filter, 20 x 16 x 1, 4 MERV, Craft Die Cut Frame, 3PAK, 90 Day
Sku: 36900100
4 Available at San Marcos
$15.99
 
2004DC-6 Electrostatic Air Filter, 25 x 14 x 1, 11 MERV, Fiber Filter Media, 90 Day
Filtrete
2004DC-6 Electrostatic Air Filter, 25 x 14 x 1, 11 MERV, Fiber Filter Media, 90 Day
Sku: 36090122
3 Available at San Marcos
$20.99
 
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