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Need a different depth?
Same size, deeper filter
Below is 23-1/2x23-1/2 at 1 naturalaire″. A thicker filter holds more before it loads up, so it lasts longer between changes and puts less strain on the blower — we carry the same width and height in the depths below.
Ordering for a building? Ask for volume pricing or call 1-866-469-8556.
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MERV 8Vendor:AAF Flanders23-1/8x19-3/8x1 NaturalAire Standard MERV 8
Regular price $255.99Sale price $255.99 Regular priceUnit price Case of 12 $21.33/filter -
MERV 8Vendor:AAF Flanders17-1/2x29-1/2x1 NaturalAire Standard MERV 8
Regular price $170.99Sale price $170.99 Regular priceUnit price Case of 12 $14.25/filter -
MERV 10Vendor:AAF FlandersCustom Size NaturalAire Microparticle MERV 10 Air Filter
Regular price $228.99Sale price $228.99 Regular price -
Vendor:AAF Flanders19x21-1/2x1 NaturalAire Standard MERV 8
Regular price $268.99Sale price $268.99 Regular priceUnit price Case of 12 $22.42/filter -
MERV 8Up to $27.11 offVendor:AAF FlandersWAREHOUSE DEAL 11-1/2x11-1/2x1 NaturalAire Standard MERV 8
Only 1 leftRegular price $118.88Sale price $118.88 Regular priceUnit price Case of 12 $9.91/filter$145.99 -
MERV 13Vendor:AAF Flanders20x30x1 NaturalAire Healthy Ultra MERV 13
Regular price $228.99Sale price $228.99 Regular priceUnit price Case of 12 $19.08/filter -
MERV 8Vendor:AAF Flanders20x20x1 NaturalAire Standard MERV 8
Regular price $104.99Sale price $104.99 Regular priceUnit price Case of 12 $8.75/filter -
MERV 8Vendor:AAF Flanders20x24x1 NaturalAire Standard MERV 8
Regular price $110.99Sale price $110.99 Regular priceUnit price Case of 12 $9.25/filter -
MERV 10Vendor:AAF Flanders16x25x1 NaturalAire Microparticle MERV 10
Regular price $74.99Sale price $74.99 Regular priceUnit price Case of 6 $12.50/filter -
MERV 8Vendor:AAF Flanders17-1/2x17-1/2x1 NaturalAire Standard MERV 8
Regular price $128.99Sale price $128.99 Regular priceUnit price Case of 12 $10.75/filter -
Vendor:AAF Flanders17-1/2x17-1/2x1 NaturalAire Healthy Ultra MERV 13
Regular price $314.99Sale price $314.99 Regular priceUnit price Case of 12 $26.25/filter -
MERV 13Vendor:AAF Flanders25x25x1 NaturalAire Healthy Ultra MERV 13
Regular price $230.99Sale price $230.99 Regular priceUnit price Case of 12 $19.25/filter -
MERV 13Vendor:AAF Flanders14x25x1 NaturalAire Healthy Ultra MERV 13
Regular price $249.99Sale price $249.99 Regular priceUnit price Case of 12 $20.83/filter -
Vendor:AAF Flanders25x30x1 NaturalAire Healthy Ultra MERV 13
Regular price $380.99Sale price $380.99 Regular priceUnit price Case of 12 $31.75/filter -
MERV 10Vendor:AAF Flanders14x18x1 NaturalAire Microparticle MERV 10
Regular price $127.99Sale price $127.99 Regular priceUnit price Case of 6 $21.33/filter -
MERV 8Vendor:AAF Flanders11-1/2x11-1/2x1 NaturalAire Standard MERV 8
Regular price $159.99Sale price $159.99 Regular priceUnit price Case of 12 $13.33/filter
