$75.90
$100.90
You save
$25.00
Furnace Filter 18x20x1 With Price History Tracking
8,532 products
Price Comparison
Cheapest Price
$6.43
Average Price
$21
Highest Price
$75.90
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18x20x1 Air Filter
$64.99
18x20x1 MERV 11 Pleated AC Furnace Filter - Case of 6
Furnace Filter 18x20x1
$22.43
10x10x1 Accumulair Furnace Filter APR 2250
Furnace Filter 18x20x1
$22.43
10x14x1 Accumulair Furnace Filter APR 2250
Furnace Filter 18x20x1
$22.43
11.5x21x1 Accumulair Furnace Filter APR 2250
Furnace Filter 18x20x1
$18.47
10x20x1 Accumulair Furnace Filter Merv 13
Furnace Filter 18x20x1
$19.79
10x10x2 Accumulair Furnace Filter Merv 13
Furnace Filter 18x20x1
$21.11
10x14x4 Accumulair Furnace Filter Merv 13
Furnace Filter 18x20x1
$14.51
10x14x2 Accumulair Furnace Filter Merv 11
Furnace Filter 18x20x1
$13.19
10x18x2 Accumulair Furnace Filter Merv 11
Furnace Filter 18x20x1
$17.15
10x14x4 Accumulair Furnace Filter Merv 11
Furnace Filter 18x20x1
$10.55
10x14x1 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$11.87
10x16x1 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$10.55
11.25x23.25x1 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$11.87
10x15x2 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$10.55
10x18x2 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$14.51
10x10x4 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$14.51
10x18x4 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$14.51
10x20x4 Accumulair Furnace Filter Merv 8
Furnace Filter 18x20x1
$17.15
10x15x1 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$17.15
10x16x1 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$25.07
10x36 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$17.15
11.25x11.25x1 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$17.15
11.25x23.25x1 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$18.47
10x10x2 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$18.47
10x10x2 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$19.79
10x24x2 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$18.47
11.25x19.25x2 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$22.43
10x14x4 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$22.43
10x15x4 Accumulair Furnace Filter Carbon
Furnace Filter 18x20x1
$45.99
18x20x1 EZ Flow II Fiberglass Furnace AC Filters, Case of 12, 10055.011820
Furnace Filter 18x20x1
$29.03
19x20x1 Air Filter Furnace or AC
Furnace Filter 18x20x1
$19.79
11.25x19.25x2 Air Filter Furnace or AC
Furnace Filter 18x20x1
$8.60
18X20X1 AIR FILTER
Furnace Filter 18x20x1
$6.43
$7.80
You save
$1.37
FURNACE FILTER 16" X 24" X 1" PLEATED
Furnace Filter 18x20x1
$8.10
$8.59
You save
$0.49
FURNACE FILTER 16" X 24" X 2" MERV 4
Furnace Filter 18x20x1
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