Air filters
Products
Shop pleated replacement air filters by size, depth, and MERV rating.
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20x34x4 MERV 11 Air Filter
Regular price From $7.88 USDRegular price$39.41 USDSale price From $7.88 USDSale -
20x34x4 MERV 13 Air Filter
Regular price From $8.97 USDRegular price$44.83 USDSale price From $8.97 USDSale -
20x34x4 MERV 8 Air Filter
Regular price From $7.53 USDRegular price$37.66 USDSale price From $7.53 USDSale -
20x36x1 MERV 11 Air Filter
Regular price From $3.48 USDRegular price$17.41 USDSale price From $3.48 USDSale -
20x36x1 MERV 13 Air Filter
Regular price From $4.52 USDRegular price$22.58 USDSale price From $4.52 USDSale -
20x36x1 MERV 8 Air Filter
Regular price From $3.12 USDRegular price$15.58 USDSale price From $3.12 USDSale -
20x36x2 MERV 11 Air Filter
Regular price From $5.47 USDRegular price$27.33 USDSale price From $5.47 USDSale -
20x36x2 MERV 13 Air Filter
Regular price From $6.17 USDRegular price$30.83 USDSale price From $6.17 USDSale -
20x36x2 MERV 8 Air Filter
Regular price From $5.02 USDRegular price$25.08 USDSale price From $5.02 USDSale -
20x36x4 MERV 11 Air Filter
Regular price From $7.88 USDRegular price$39.41 USDSale price From $7.88 USDSale -
20x36x4 MERV 13 Air Filter
Regular price From $8.97 USDRegular price$44.83 USDSale price From $8.97 USDSale -
20x36x4 MERV 8 Air Filter
Regular price From $7.53 USDRegular price$37.66 USDSale price From $7.53 USDSale -
20ร25.25ร3.5 Aprilaire 2120 / 102 MERV 11 Aftermarket Replacement Filter
Regular price From $6.88 USDRegular price$34.42 USDSale price From $6.88 USDSale -
20ร25.25ร3.5 Aprilaire 2120 / 102 MERV 13 Aftermarket Replacement Filter
Regular price From $7.64 USDRegular price$38.20 USDSale price From $7.64 USDSale -
20ร25.25ร3.5 Aprilaire 2120 / 102 MERV 13 Aftermarket Replacement Filter
Regular price From $7.64 USDRegular price$38.20 USDSale price From $7.64 USDSale -
21-25x21-25x1 MERV 11 Air Filter
Regular price From $3.47 USDRegular price$17.33 USDSale price From $3.47 USDSale -
21-25x21-25x1 MERV 13 Air Filter
Regular price From $4.17 USDRegular price$20.83 USDSale price From $4.17 USDSale -
21-25x21-25x1 MERV 8 Air Filter
Regular price From $3.02 USDRegular price$15.08 USDSale price From $3.02 USDSale -
21-25x21-25x2 MERV 11 Air Filter
Regular price From $3.82 USDRegular price$19.08 USDSale price From $3.82 USDSale -
21-25x21-25x2 MERV 13 Air Filter
Regular price From $4.37 USDRegular price$21.83 USDSale price From $4.37 USDSale -
21-25x21-25x2 MERV 8 Air Filter
Regular price From $2.73 USDRegular price$13.66 USDSale price From $2.73 USDSale -
21-25x21-25x4 MERV 11 Air Filter
Regular price From $5.77 USDRegular price$28.83 USDSale price From $5.77 USDSale -
21-25x21-25x4 MERV 13 Air Filter
Regular price From $6.77 USDRegular price$33.83 USDSale price From $6.77 USDSale -
21-25x21-25x4 MERV 8 Air Filter
Regular price From $4.52 USDRegular price$22.58 USDSale price From $4.52 USDSale -
21-5x21-5x1 MERV 11 Air Filter
Regular price From $2.42 USDRegular price$12.08 USDSale price From $2.42 USDSale -
21-5x21-5x1 MERV 13 Air Filter
Regular price From $3.62 USDRegular price$18.08 USDSale price From $3.62 USDSale -
21-5x21-5x1 MERV 8 Air Filter
Regular price From $2.15 USDRegular price$10.74 USDSale price From $2.15 USDSale -
21-5x23-25x1 MERV 11 Air Filter
Regular price From $3.26 USDRegular price$16.30 USDSale price From $3.26 USDSale -
21-5x23-25x1 MERV 13 Air Filter
Regular price From $4.37 USDRegular price$21.83 USDSale price From $4.37 USDSale -
21-5x23-25x1 MERV 8 Air Filter
Regular price From $2.17 USDRegular price$10.83 USDSale price From $2.17 USDSale -
21-5x23-25x4 MERV 11 Air Filter
Regular price From $5.77 USDRegular price$28.83 USDSale price From $5.77 USDSale -
21-5x23-25x4 MERV 13 Air Filter
Regular price From $6.77 USDRegular price$33.83 USDSale price From $6.77 USDSale -
21-5x23-25x4 MERV 8 Air Filter
Regular price From $4.52 USDRegular price$22.58 USDSale price From $4.52 USDSale -
21-5x23x1 MERV 11 Air Filter
Regular price From $3.32 USDRegular price$16.58 USDSale price From $3.32 USDSale -
21-5x23x1 MERV 13 Air Filter
Regular price From $4.42 USDRegular price$22.08 USDSale price From $4.42 USDSale -
21-5x23x1 MERV 8 Air Filter
Regular price From $3.02 USDRegular price$15.08 USDSale price From $3.02 USDSale -
21-5x23x2 MERV 11 Air Filter
Regular price From $4.34 USDRegular price$21.72 USDSale price From $4.34 USDSale -
21-5x23x2 MERV 13 Air Filter
Regular price From $5.02 USDRegular price$25.11 USDSale price From $5.02 USDSale -
21-5x23x2 MERV 8 Air Filter
Regular price From $3.35 USDRegular price$16.75 USDSale price From $3.35 USDSale -
21-5x23x25x2 MERV 11 Air Filter
Regular price From $4.02 USDRegular price$20.08 USDSale price From $4.02 USDSale -
21-5x23x25x2 MERV 13 Air Filter
Regular price From $4.92 USDRegular price$24.58 USDSale price From $4.92 USDSale -
21-5x23x25x2 MERV 8 Air Filter
Regular price From $3.02 USDRegular price$15.08 USDSale price From $3.02 USDSale -
21-5x23x4 MERV 11 Air Filter
Regular price From $6.02 USDRegular price$30.08 USDSale price From $6.02 USDSale -
21-5x23x4 MERV 13 Air Filter
Regular price From $6.77 USDRegular price$33.83 USDSale price From $6.77 USDSale -
21-5x23x4 MERV 8 Air Filter
Regular price From $4.78 USDRegular price$23.91 USDSale price From $4.78 USDSale -
21-5x24x1 MERV 11 Air Filter
Regular price From $3.67 USDRegular price$18.33 USDSale price From $3.67 USDSale -
21-5x24x1 MERV 13 Air Filter
Regular price From $4.42 USDRegular price$22.08 USDSale price From $4.42 USDSale -
21-5x24x1 MERV 8 Air Filter
Regular price From $3.32 USDRegular price$16.58 USDSale price From $3.32 USDSale -
21-5x24x2 MERV 11 Air Filter
Regular price From $4.02 USDRegular price$20.08 USDSale price From $4.02 USDSale -
21-5x24x2 MERV 13 Air Filter
Regular price From $4.92 USDRegular price$24.58 USDSale price From $4.92 USDSale
Browse Our Top Collections
Looking for more?
Browse additional depths, sizes, and MERV ratings for the exact replacement filter you need.
Choosing A MERV Rating
MERV 8 is a common residential choice for dust and pollen. MERV 11 and MERV 13 add stronger particle capture for homes that need higher filtration.
How do I find my filter size?
Check the size printed on the existing filter frame, then compare the nominal size with the actual dimensions when available.