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Furnace Filters & Accessories

220-800-051 Panel Air Filter, 25 x 20 x 1, Chipboard Frame
AAF
220-800-051 Panel Air Filter, 25 x 20 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120004 More Options
16 Available at SAN MARCOS
$2.49
220-700-051 Panel Air Filter, 20 x 20 x 1, Chipboard Frame
AAF
220-700-051 Panel Air Filter, 20 x 20 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120008 More Options
18 Available at SAN MARCOS
$2.49
116241 Panel Air Filter, 24 x 16 x 1, Chipboard Frame
AAF
116241 Panel Air Filter, 24 x 16 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120010 More Options
11 Available at SAN MARCOS
$2.49
220-600-051 Panel Air Filter, 25 x 16 x 1, Chipboard Frame
AAF
220-600-051 Panel Air Filter, 25 x 16 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120012 More Options
16 Available at SAN MARCOS
$2.49
220-500-051 Panel Air Filter, 20 x 16 x 1, Chipboard Frame
AAF
220-500-051 Panel Air Filter, 20 x 16 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120016 More Options
12 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011425 Panel Air Filter, 25 x 14 x 1, 4 MERV, Chipboard Frame
Flanders
EZ Flow II 10055.011425 Panel Air Filter, 25 x 14 x 1, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120024 More Options
8 Available at SAN MARCOS
$2.49
114201 Panel Air Filter, 20 x 14 x 1, Chipboard Frame
AAF
114201 Panel Air Filter, 20 x 14 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120028 More Options
11 Available at SAN MARCOS
$2.49
NaturalAire 84858.01143 Pleated Air Filter, 30 x 14 x 1, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01143 Pleated Air Filter, 30 x 14 x 1, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120029 More Options
8 Available at SAN MARCOS
$5.99
10055.01102 Furnace Air Filter, 20 x 10 x 1, 4 MERV, Chipboard Frame
Flanders
10055.01102 Furnace Air Filter, 20 x 10 x 1, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120032 More Options
4 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011224 Furnace Air Filter, 24 x 12 x 1, 4 MERV, Chipboard Frame
Flanders
EZ Flow II 10055.011224 Furnace Air Filter, 24 x 12 x 1, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120040 More Options
17 Available at SAN MARCOS
$2.49
9800DC-6 Micro Air Filter, 20 x 16 x 1, 11 MERV, Pleated Fabric Filter Media
Filtrete
9800DC-6 Micro Air Filter, 20 x 16 x 1, 11 MERV, Pleated Fabric Filter Media
Project Lists Icon
Sku: 11120045
0 Available at SAN MARCOS
$13.99
9802DC-6 Micro Air Filter, 20 x 20 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Filtrete
9802DC-6 Micro Air Filter, 20 x 20 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Project Lists Icon
Sku: 11120047 More Options
5 Available at SAN MARCOS
$13.99
NaturalAire 84858.01162 Pleated Air Filter, 20 x 16 x 1, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01162 Pleated Air Filter, 20 x 16 x 1, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120048 More Options
15 Available at SAN MARCOS
$6.29
9803DC-6 Micro Air Filter, 25 x 20 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Filtrete
9803DC-6 Micro Air Filter, 25 x 20 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Project Lists Icon
Sku: 11120049 More Options
4 Available at SAN MARCOS
$13.99
9804DC-6 Micro Air Filter, 25 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Filtrete
9804DC-6 Micro Air Filter, 25 x 14 x 1, 11 MERV, 90 % Filter Efficiency, Pleated Fabric Filter Media
Project Lists Icon
Sku: 11120050 More Options
4 Available at SAN MARCOS
$13.99
9812DC-6 Air Filter, 24 x 24 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White
Filtrete
9812DC-6 Air Filter, 24 x 24 x 1, 11 MERV, 90 % Filter Efficiency, Cardboard Frame, White
Project Lists Icon
Sku: 11120051 More Options
6 Available at SAN MARCOS
$13.99
84858.01163 Pleated Air Filter, 25 x 16 x 1, 8 MERV
Flanders
84858.01163 Pleated Air Filter, 25 x 16 x 1, 8 MERV
Project Lists Icon
Sku: 11120052 More Options
10 Available at SAN MARCOS
$5.99
84858.012020 Air Filter, 20 in L, 20 in W, 8 MERV, Clay Frame, For: Any Household HVAC System
NaturalAire
84858.012020 Air Filter, 20 in L, 20 in W, 8 MERV, Clay Frame, For: Any Household HVAC System
Project Lists Icon
Sku: 11120056 More Options
20 Available at SAN MARCOS
$5.99
NaturalAire 84858.01203 Pleated Air Filter, 25 x 20 x 1, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01203 Pleated Air Filter, 25 x 20 x 1, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120060 More Options
10 Available at SAN MARCOS
$6.99
SM100 Washable Furnace Air Filter, 30 x 20 x 1
Flanders
SM100 Washable Furnace Air Filter, 30 x 20 x 1
Project Lists Icon
Sku: 11120076
0 Available at SAN MARCOS
$11.99
EZ Flow II 10055.01122 Panel Air Filter, 20 x 12 x 1, Chipboard Frame
Flanders
EZ Flow II 10055.01122 Panel Air Filter, 20 x 12 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120100 More Options
14 Available at SAN MARCOS
$2.49
84858.011420 Standard Air Filter, 20 x 14 x 1, 8 MERV
NaturalAire
84858.011420 Standard Air Filter, 20 x 14 x 1, 8 MERV
Project Lists Icon
Sku: 11120104 More Options
11 Available at SAN MARCOS
$5.99
84858.011425 Dirt Pleated Standard Capacity Air Filter, 25 x 14 x 1, 8 MERV
NaturalAire
84858.011425 Dirt Pleated Standard Capacity Air Filter, 25 x 14 x 1, 8 MERV
Project Lists Icon
Sku: 11120108 More Options
14 Available at SAN MARCOS
$5.99
124241 Panel Air Filter, 24 x 24 x 1, Chipboard Frame
AAF
124241 Panel Air Filter, 24 x 24 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120116 More Options
4 Available at SAN MARCOS
$2.99
NaturalAire 84858.01242 Pleated Air Filter, 24 x 24 x 1, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01242 Pleated Air Filter, 24 x 24 x 1, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120118 More Options
9 Available at SAN MARCOS
$6.99
84858.011220 Standard Air Filter, 20 x 12 x 1, 8 MERV
NaturalAire
84858.011220 Standard Air Filter, 20 x 12 x 1, 8 MERV
Project Lists Icon
Sku: 11120124 More Options
6 Available at SAN MARCOS
$5.99
84858.011212 Pleated Air Filter, 12 x 12 x 1, 8 MERV
Flanders
84858.011212 Pleated Air Filter, 12 x 12 x 1, 8 MERV
Project Lists Icon
Sku: 11120125 More Options
17 Available at SAN MARCOS
$5.99
NaturalAire 84858.011224 Pleated Air Filter, 24 x 12 x 1, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.011224 Pleated Air Filter, 24 x 12 x 1, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120128 More Options
14 Available at SAN MARCOS
$5.99
StrataDensity 220-208-051 Furnace Air Filter, 24 x 10 x 1, 4 MERV, Chipboard Frame
Flanders
StrataDensity 220-208-051 Furnace Air Filter, 24 x 10 x 1, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120132 More Options
4 Available at SAN MARCOS
$2.49
112301 Panel Air Filter, 30 x 12 x 1, Chipboard Frame
AAF
112301 Panel Air Filter, 30 x 12 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120144 More Options
12 Available at SAN MARCOS
$2.49
E-Z Flow 10055.011236 Panel Air Filter, 36 x 12 x 1, 4 MERV, Cardboard Frame
Flanders
E-Z Flow 10055.011236 Panel Air Filter, 36 x 12 x 1, 4 MERV, Cardboard Frame
Project Lists Icon
Sku: 11120148 More Options
14 Available at SAN MARCOS
$2.49
114241 Panel Air Filter, 24 x 14 x 1, Chipboard Frame
AAF
114241 Panel Air Filter, 24 x 14 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120152 More Options
6 Available at SAN MARCOS
$2.49
114301 Panel Air Filter, 30 x 14 x 1, Chipboard Frame
AAF
114301 Panel Air Filter, 30 x 14 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120156 More Options
12 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011818 Panel Air Filter, 18 x 18 x 1, 4 MERV
Flanders
EZ Flow II 10055.011818 Panel Air Filter, 18 x 18 x 1, 4 MERV
Project Lists Icon
Sku: 11120172 More Options
9 Available at SAN MARCOS
$2.49
118201 Panel Air Filter, 20 x 18 x 1, Chipboard Frame
AAF
118201 Panel Air Filter, 20 x 18 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120176 More Options
8 Available at SAN MARCOS
$2.49
118241 Panel Air Filter, 24 in L, 18 in W, Chipboard Frame
AAF
118241 Panel Air Filter, 24 in L, 18 in W, Chipboard Frame
Project Lists Icon
Sku: 11120180 More Options
9 Available at SAN MARCOS
$2.49
120241 Panel Air Filter, 24 x 20 x 1, Chipboard Frame
AAF
120241 Panel Air Filter, 24 x 20 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120188 More Options
11 Available at SAN MARCOS
$2.49
120301 Panel Air Filter, 30 x 20 x 1, Chipboard Frame
AAF
120301 Panel Air Filter, 30 x 20 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120200 More Options
10 Available at SAN MARCOS
$3.49
124301 Panel Air Filter, 30 x 24 x 1, Chipboard Frame
AAF
124301 Panel Air Filter, 30 x 24 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120208 More Options
11 Available at SAN MARCOS
$3.49
112121 Panel Air Filter, 12 x 12 x 1, Chipboard Frame
AAF
112121 Panel Air Filter, 12 x 12 x 1, Chipboard Frame
Project Lists Icon
Sku: 11120214 More Options
16 Available at SAN MARCOS
$2.49
84858.01183 Air Filter, 30 x 18 x 1, 8 MERV, Cardboard Frame, Clay-Coated Frame
NaturalAire
84858.01183 Air Filter, 30 x 18 x 1, 8 MERV, Cardboard Frame, Clay-Coated Frame
Project Lists Icon
Sku: 11120222 More Options
10 Available at SAN MARCOS
$6.99
84858.012030 Pleated Air Filter, 20 x 30 x 1, 8 MERV
Flanders
84858.012030 Pleated Air Filter, 20 x 30 x 1, 8 MERV
Project Lists Icon
Sku: 11120224 More Options
17 Available at SAN MARCOS
$7.99
223-829-051 Furnace Air Filter, 36 x 24 x 1
Flanders
223-829-051 Furnace Air Filter, 36 x 24 x 1
Project Lists Icon
Sku: 11120232 More Options
15 Available at SAN MARCOS
$3.49
2022DC-6 Electrostatic Air Filter, 30 x 20 x 1, 11 MERV, Fiber Filter Media
Filtrete
2022DC-6 Electrostatic Air Filter, 30 x 20 x 1, 11 MERV, Fiber Filter Media
Project Lists Icon
Sku: 11120258 More Options
5 Available at SAN MARCOS
$18.99
E-Z Flow 10055.011830 Panel Air Filter, 30 x 18 x 1, 4 MERV, Cardboard Frame
Flanders
E-Z Flow 10055.011830 Panel Air Filter, 30 x 18 x 1, 4 MERV, Cardboard Frame
Project Lists Icon
Sku: 36090102 More Options
2 Available at SAN MARCOS
$4.49
84858.01243 Pleated Air Filter, 30 x 24 x 1, 8 MERV
Flanders
84858.01243 Pleated Air Filter, 30 x 24 x 1, 8 MERV
Project Lists Icon
Sku: 36090106
0 Available at SAN MARCOS
$7.99
2000DC-6 Electrostatic Air Filter, 20 x 16 x 1, 11 MERV, Fiber Filter Media
Filtrete
2000DC-6 Electrostatic Air Filter, 20 x 16 x 1, 11 MERV, Fiber Filter Media
Project Lists Icon
Sku: 36090108
0 Available at SAN MARCOS
$18.99
2001DC-6 Electrostatic Air Filter, 25 x 16 x 1, 11 MERV, Fiber Filter Media
Filtrete
2001DC-6 Electrostatic Air Filter, 25 x 16 x 1, 11 MERV, Fiber Filter Media
Project Lists Icon
Sku: 36090110
0 Available at SAN MARCOS
$19.99