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Need a different depth?
Same size, deeper filter
Below is 12x18 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 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 Flanders20x30x1 NaturalAire Standard MERV 8
Regular price $155.99Sale price $155.99 Regular priceUnit price Case of 12 $13.00/filter -
MERV 8Vendor:AAF FlandersCustom Size NaturalAire Standard MERV 8 Air Filter
Regular price $208.99Sale price $208.99 Regular price -
MERV 13Vendor:AAF Flanders18x20x1 NaturalAire Healthy Ultra MERV 13
Regular price $193.99Sale price $193.99 Regular priceUnit price Case of 12 $16.17/filter -
MERV 8Vendor:AAF Flanders12x20x1 NaturalAire Standard MERV 8
Regular price $95.99Sale price $95.99 Regular priceUnit price Case of 12 $8.00/filter -
MERV 8Vendor:AAF Flanders14x24x1 NaturalAire Standard MERV 8
Regular price $96.99Sale price $96.99 Regular priceUnit price Case of 12 $8.08/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 8Vendor:AAF Flanders18x36x1 NaturalAire Standard MERV 8
Regular price $193.99Sale price $193.99 Regular priceUnit price Case of 12 $16.17/filter -
MERV 8Vendor:AAF Flanders21-1/2x23-1/2x1 NaturalAire Standard MERV 8
Regular price $183.99Sale price $183.99 Regular priceUnit price Case of 12 $15.33/filter -
MERV 10Vendor:AAF Flanders18x24x1 NaturalAire Microparticle MERV 10
Regular price $148.99Sale price $148.99 Regular priceUnit price Case of 12 $12.42/filter -
MERV 8Vendor:AAF Flanders12x30x1 NaturalAire Standard MERV 8
Regular price $129.99Sale price $129.99 Regular priceUnit price Case of 12 $10.83/filter -
Vendor:AAF Flanders12x36x1 NaturalAire Healthy Ultra MERV 13
Regular price $321.99Sale price $321.99 Regular priceUnit price Case of 12 $26.83/filter -
Vendor:AAF Flanders17-1/2x23-1/2x1 NaturalAire Standard MERV 8
Regular price $156.99Sale price $156.99 Regular priceUnit price Case of 12 $13.08/filter -
MERV 10Vendor:AAF Flanders18x30x1 NaturalAire Microparticle MERV 10
Regular price $246.99Sale price $246.99 Regular priceUnit price Case of 12 $20.58/filter -
MERV 10Vendor:AAF Flanders12x36x1 NaturalAire Microparticle MERV 10
Regular price $187.99Sale price $187.99 Regular priceUnit price Case of 12 $15.67/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
