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Furnace Filters & Accessories

220-800-051 Panel Filter, 25 in L, 20 in W, Chipboard Frame
AAF
220-800-051 Panel Filter, 25 in L, 20 in W, Chipboard Frame
Project Lists Icon
Sku: 11120004 More Options
15 Available at SAN MARCOS
$2.49
220-700-051 Panel Filter, 20 in L, 20 in W, Chipboard Frame
AAF
220-700-051 Panel Filter, 20 in L, 20 in W, Chipboard Frame
Project Lists Icon
Sku: 11120008 More Options
16 Available at SAN MARCOS
$2.49
116241 Panel Filter, 24 in L, 16 in W, Chipboard Frame
AAF
116241 Panel Filter, 24 in L, 16 in W, Chipboard Frame
Project Lists Icon
Sku: 11120010 More Options
13 Available at SAN MARCOS
$2.49
220-600-051 Panel Filter, 25 in L, 16 in W, Chipboard Frame
AAF
220-600-051 Panel Filter, 25 in L, 16 in W, Chipboard Frame
Project Lists Icon
Sku: 11120012 More Options
12 Available at SAN MARCOS
$2.49
220-500-051 Panel Filter, 20 in L, 16 in W, Chipboard Frame
AAF
220-500-051 Panel Filter, 20 in L, 16 in W, Chipboard Frame
Project Lists Icon
Sku: 11120016 More Options
15 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011425 Panel Filter, 14 in L, 25 in W, 4 MERV, Chipboard Frame
Flanders
EZ Flow II 10055.011425 Panel Filter, 14 in L, 25 in W, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120024 More Options
12 Available at SAN MARCOS
$2.49
114201 Panel Filter, 20 in L, 14 in W, Chipboard Frame
AAF
114201 Panel Filter, 20 in L, 14 in W, Chipboard Frame
Project Lists Icon
Sku: 11120028 More Options
2 Available at SAN MARCOS
$2.49
NaturalAire 84858.01143 Pleated Air Filter, 30 in L, 14 in W, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01143 Pleated Air Filter, 30 in L, 14 in W, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120029 More Options
14 Available at SAN MARCOS
$5.99
10055.01102 Furnace Filter, 10 in L, 20 in W, 4 MERV, Chipboard Frame
Flanders
10055.01102 Furnace Filter, 10 in L, 20 in W, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120032 More Options
7 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011224 Furnace Air Filter, 12 in L, 24 in W, 4 MERV, Chipboard Frame
Flanders
EZ Flow II 10055.011224 Furnace Air Filter, 12 in L, 24 in W, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120040 More Options
18 Available at SAN MARCOS
$2.49
NaturalAire 84858.01162 Pleated Air Filter, 20 in L, 16 in W, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01162 Pleated Air Filter, 20 in L, 16 in W, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120048 More Options
2 Available at SAN MARCOS
$5.99
84858.01163 Pleated Air Filter, 25 in L, 16 in W, 8 MERV
Flanders
84858.01163 Pleated Air Filter, 25 in L, 16 in W, 8 MERV
Project Lists Icon
Sku: 11120052 More Options
5 Available at SAN MARCOS
$5.99
NaturalAire 84858.01203 Pleated Air Filter, 25 in L, 20 in W, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01203 Pleated Air Filter, 25 in L, 20 in W, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120060 More Options
5 Available at SAN MARCOS
$5.99
EZ Flow II 10055.01122 Panel Filter, 12 in L, 20 in W, Chipboard Frame
Flanders
EZ Flow II 10055.01122 Panel Filter, 12 in L, 20 in W, Chipboard Frame
Project Lists Icon
Sku: 11120100 More Options
6 Available at SAN MARCOS
$2.49
84858.011420 Standard Air Filter, 14 in L, 20 in W, 8 MERV
NaturalAire
84858.011420 Standard Air Filter, 14 in L, 20 in W, 8 MERV
Project Lists Icon
Sku: 11120104 More Options
14 Available at SAN MARCOS
$5.99
124241 Panel Filter, 24 in L, 24 in W, Chipboard Frame
AAF
124241 Panel Filter, 24 in L, 24 in W, Chipboard Frame
Project Lists Icon
Sku: 11120116 More Options
6 Available at SAN MARCOS
$2.99
NaturalAire 84858.01242 Pleated Air Filter, 24 in L, 24 in W, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.01242 Pleated Air Filter, 24 in L, 24 in W, 8 MERV, Clay Frame
Project Lists Icon
Sku: 11120118 More Options
18 Available at SAN MARCOS
$5.99
84858.011220 Standard Air Filter, 12 in L, 20 in W, 8 MERV
NaturalAire
84858.011220 Standard Air Filter, 12 in L, 20 in W, 8 MERV
Project Lists Icon
Sku: 11120124 More Options
8 Available at SAN MARCOS
$5.99
84858.011212 Pleated Air Filter, 12 in L, 12 in W, 8 MERV
Flanders
84858.011212 Pleated Air Filter, 12 in L, 12 in W, 8 MERV
Project Lists Icon
Sku: 11120125 More Options
16 Available at SAN MARCOS
$5.99
NaturalAire 84858.011224 Pleated Air Filter, 24 in L, 12 in W, 8 MERV, Clay Frame
Flanders
NaturalAire 84858.011224 Pleated Air Filter, 24 in L, 12 in W, 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 in L, 10 in W, 4 MERV, Chipboard Frame
Flanders
StrataDensity 220-208-051 Furnace Air Filter, 24 in L, 10 in W, 4 MERV, Chipboard Frame
Project Lists Icon
Sku: 11120132 More Options
3 Available at SAN MARCOS
$2.49
112301 Panel Filter, 30 in L, 12 in W, Chipboard Frame
AAF
112301 Panel Filter, 30 in L, 12 in W, Chipboard Frame
Project Lists Icon
Sku: 11120144 More Options
6 Available at SAN MARCOS
$2.49
E-Z Flow 10055.011236 Panel Filter, 36 in L, 12 in W, 4 MERV, Cardboard Frame
Flanders
E-Z Flow 10055.011236 Panel Filter, 36 in L, 12 in W, 4 MERV, Cardboard Frame
Project Lists Icon
Sku: 11120148 More Options
12 Available at SAN MARCOS
$2.49
114241 Panel Filter, 24 in L, 14 in W, Chipboard Frame
AAF
114241 Panel Filter, 24 in L, 14 in W, Chipboard Frame
Project Lists Icon
Sku: 11120152 More Options
11 Available at SAN MARCOS
$2.49
114301 Panel Filter, 30 in L, 14 in W, Chipboard Frame
AAF
114301 Panel Filter, 30 in L, 14 in W, Chipboard Frame
Project Lists Icon
Sku: 11120156
0 Available at SAN MARCOS
$2.49
EZ Flow II 10055.011818 Panel Filter, 18 in L, 18 in W, 4 MERV
Flanders
EZ Flow II 10055.011818 Panel Filter, 18 in L, 18 in W, 4 MERV
Project Lists Icon
Sku: 11120172 More Options
13 Available at SAN MARCOS
$2.49
118201 Panel Filter, 20 in L, 18 in W, Chipboard Frame
AAF
118201 Panel Filter, 20 in L, 18 in W, Chipboard Frame
Project Lists Icon
Sku: 11120176 More Options
11 Available at SAN MARCOS
$2.49
118241 Panel Filter, 24 in L, 18 in W, Chipboard Frame
AAF
118241 Panel 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 Filter, 24 in L, 20 in W, Chipboard Frame
AAF
120241 Panel Filter, 24 in L, 20 in W, Chipboard Frame
Project Lists Icon
Sku: 11120188 More Options
12 Available at SAN MARCOS
$2.49
120301 Panel Filter, 30 in L, 20 in W, Chipboard Frame
AAF
120301 Panel Filter, 30 in L, 20 in W, Chipboard Frame
Project Lists Icon
Sku: 11120200
0 Available at SAN MARCOS
$3.49
124301 Panel Filter, 30 in L, 24 in W, Chipboard Frame
AAF
124301 Panel Filter, 30 in L, 24 in W, Chipboard Frame
Project Lists Icon
Sku: 11120208 More Options
6 Available at SAN MARCOS
$3.49
112121 Panel Filter, 12 in L, 12 in W, Chipboard Frame
AAF
112121 Panel Filter, 12 in L, 12 in W, Chipboard Frame
Project Lists Icon
Sku: 11120214 More Options
4 Available at SAN MARCOS
$2.49
84858.01183 Air Filter, 30 in L, 18 in W, 8 MERV, Cardboard Frame, Clay-Coated Frame
NaturalAire
84858.01183 Air Filter, 30 in L, 18 in W, 8 MERV, Cardboard Frame, Clay-Coated Frame
Project Lists Icon
Sku: 11120222
0 Available at SAN MARCOS
$5.99
84858.012030 Pleated Air Filter, 30 in L, 20 in W, 8 MERV
Flanders
84858.012030 Pleated Air Filter, 30 in L, 20 in W, 8 MERV
Project Lists Icon
Sku: 11120224 More Options
5 Available at SAN MARCOS
$5.99
223-829-051 Furnace Air Filter, 36 in L, 24 in W
Flanders
223-829-051 Furnace Air Filter, 36 in L, 24 in W
Project Lists Icon
Sku: 11120232 More Options
4 Available at SAN MARCOS
$3.49
E-Z Flow 10055.011830 Panel Filter, 30 in L, 18 in W, 4 MERV, Cardboard Frame
Flanders
E-Z Flow 10055.011830 Panel Filter, 30 in L, 18 in W, 4 MERV, Cardboard Frame
Project Lists Icon
Sku: 36090102 More Options
8 Available at SAN MARCOS
$4.49
84858.01243 Pleated Air Filter, 30 in L, 24 in W, 8 MERV
Flanders
84858.01243 Pleated Air Filter, 30 in L, 24 in W, 8 MERV
Project Lists Icon
Sku: 36090106
0 Available at SAN MARCOS
$10.99
85256.012030 Air Filter, 30 in L, 20 in W, 10 MERV
NaturalAire
85256.012030 Air Filter, 30 in L, 20 in W, 10 MERV
Project Lists Icon
Sku: 36090402
0 Available at SAN MARCOS
$11.99
85256.012020 Microparticle Air Filter, 20 in L, 20 in W, 10 MERV, Clay Frame
NaturalAire
85256.012020 Microparticle Air Filter, 20 in L, 20 in W, 10 MERV, Clay Frame
Project Lists Icon
Sku: 36090404
0 Available at SAN MARCOS
$11.99
95003.01203 Panel Filter, 20 in L, 30 in W, 13 MERV, Cardboard Frame
NaturalAire
95003.01203 Panel Filter, 20 in L, 30 in W, 13 MERV, Cardboard Frame
Project Lists Icon
Sku: 36090406
0 Available at SAN MARCOS
$22.99
95003.01202 Panel Filter, 20 in L, 20 in W, 13 MERV, Cardboard Frame
NaturalAire
95003.01202 Panel Filter, 20 in L, 20 in W, 13 MERV, Cardboard Frame
Project Lists Icon
Sku: 36090408
0 Available at SAN MARCOS
$22.99
HW2025-13R Air Filter, 24-5/8 in L, 19-3/4 in W, 13 MERV
BestAir
HW2025-13R Air Filter, 24-5/8 in L, 19-3/4 in W, 13 MERV
Project Lists Icon
Sku: 36090410
0 Available at SAN MARCOS
$34.99
85256.011620 Pleated Air Filter, 20 in L, 16 in W, 10 MERV, Clay Coated Frame
NaturalAire
85256.011620 Pleated Air Filter, 20 in L, 16 in W, 10 MERV, Clay Coated Frame
Project Lists Icon
Sku: 36090412
0 Available at SAN MARCOS
$11.99
85256.011625 Pleated Air Filter, 25 in L, 16 in W, 10 MERV, Clay Coated Frame
NaturalAire
85256.011625 Pleated Air Filter, 25 in L, 16 in W, 10 MERV, Clay Coated Frame
Project Lists Icon
Sku: 36090414
0 Available at SAN MARCOS
$11.99
95003.011625 Panel Filter, 16 in L, 25 in W, 13 MERV, Cardboard Frame
NaturalAire
95003.011625 Panel Filter, 16 in L, 25 in W, 13 MERV, Cardboard Frame
Project Lists Icon
Sku: 36090416
0 Available at SAN MARCOS
$22.99
85256.011425 Pleated Air Filter, 25 in L, 14 in W, 10 MERV, Clay Coated Frame
NaturalAire
85256.011425 Pleated Air Filter, 25 in L, 14 in W, 10 MERV, Clay Coated Frame
Project Lists Icon
Sku: 36090418
0 Available at SAN MARCOS
$11.99
95003.011620 Air Filter, 20 in L, 16 in W, 13 MERV, Clay Coated Frame, For: Household HVAC System
NaturalAire
95003.011620 Air Filter, 20 in L, 16 in W, 13 MERV, Clay Coated Frame, For: Household HVAC System
Project Lists Icon
Sku: 36090420
0 Available at SAN MARCOS
$22.99
NaturalAire 87357.01162 Pleated Furnace Filter, 16 in L, 20 in W, 4 MERV, Craft Die Cut Frame
Flanders
NaturalAire 87357.01162 Pleated Furnace Filter, 16 in L, 20 in W, 4 MERV, Craft Die Cut Frame
Project Lists Icon
Sku: 36900100 More Options
2 Available at SAN MARCOS
$11.99