$119.99
18 X 20 Air Filter With Price History Tracking
40,742 products
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Cheapest Price
$2.59
Average Price
$174
Highest Price
$1,016.86
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Lennox - Healthy Climate X8788 - 20" x 26" x 5" - MERV 16 Filter
$185.71
Practical Pleated Air Filter (2-Pack) - 20" x 30 1/4" x 5"
18 X 20 Air Filter
$193.63
Merv 8 Pleated Air Filter - 18" x 26" x 1"
18 X 20 Air Filter
$222.86
Merv 8 Pleated Air Filter - 18" x 34" x 1"
18 X 20 Air Filter
$204.31
Merv 13 Pleated Air Filter - 18" x 19" x 1"
18 X 20 Air Filter
$1,016.86
Air Filter Electronic 20L x 20H Inch Duct 1400 CFM
18 X 20 Air Filter
$44.18
16" x 20" Media Air Filter
18 X 20 Air Filter
$111.29
Merv 8 Pleated Air Filter - 17" x 20" x 1"
18 X 20 Air Filter
$75.95
Koch 102-700-008 - 20 x 20 x 1 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$104.99
Koch 102-041-049 - 20 x 22 x 1 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$79.95
Koch 102-700-005 - 15 x 20 x 1 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$79.95
Koch 102-700-016 - 16 x 20 x 2 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$91.99
Koch 102-041-015 - 18 x 20 x 1 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$72.99
Koch 102-700-003 - 14 x 20 x 1 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$79.95
Koch 102-700-019 - 20 x 20 x 2 MERV 8 Pleated Air Filter – 12-pack
18 X 20 Air Filter
$27.22
Active Air 18" X 5" Carbon Filter - No Flange
18 X 20 Air Filter
$185.71
Practical Pleated Air Filter (2-Pack) - 20" x 26" x 5"
18 X 20 Air Filter
$222.86
Merv 8 Pleated Air Filter - 20" x 35" x 1"
18 X 20 Air Filter
$595.84
American Air Filter 20" x 20" AmerSeal Polyester Panel Air Filter
18 X 20 Air Filter
$794.44
American Air Filter 20" x 50" AmerSeal Polyester Panel Air Filter
18 X 20 Air Filter
$637.07
American Air Filter 20" X 25" AmerSeal Polyester Panel Air Filter
18 X 20 Air Filter
$82.45
Koch Filter 102-041-015 Multi-Pleat XL8 1" Semi-Standard Size 18" x 20" x1"
18 X 20 Air Filter
$2.59
FURNACE FILTER 18" X 24" X 2" MERV 4
18 X 20 Air Filter
$5.43
FURNACE FILTER 20" X 30" X 2" POLYFILTER
18 X 20 Air Filter
$5.93
FURNACE FILTER 20" X 20" X 2" MERV 8
18 X 20 Air Filter
$33.33
REPLACEMENT FILTER FOR TRION AIR BEAR 20" X 25" X 5" MERV 8
18 X 20 Air Filter
$22.96
18 x 20 x 1 Air Filter
18 X 20 Air Filter
$19.99
20 x 20 x 1 Air Filter
18 X 20 Air Filter
$65.99
Honeywell 20 X 25 Media Air Filter (MERV 13) 60
18 X 20 Air Filter
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