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Need a different depth?
Same size, deeper filter
Below is 18x18 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 10Vendor:AAF Flanders18x30x1 NaturalAire Microparticle MERV 10
Regular price $246.99Sale price $246.99 Regular priceUnit price Case of 12 $20.58/filter -
MERV 8Vendor:AAF Flanders24x30x1 NaturalAire Standard MERV 8
Regular price $186.99Sale price $186.99 Regular priceUnit price Case of 12 $15.58/filter -
Up to $16 offVendor:AAF Flanders24x36x1 NaturalAire Permaire Washable Pad
Regular price $183.99Sale price $183.99 Regular priceUnit price Case of 12 $15.33/filter$199.99 -
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 Flanders18x36x1 NaturalAire Standard MERV 8
Regular price $193.99Sale price $193.99 Regular priceUnit price Case of 12 $16.17/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 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 Flanders20x24x1 NaturalAire Standard MERV 8
Regular price $110.99Sale price $110.99 Regular priceUnit price Case of 12 $9.25/filter -
MERV 10Vendor:AAF Flanders25x30x1 NaturalAire Microparticle MERV 10
Regular price $131.99Sale price $131.99 Regular priceUnit price Case of 6 $22.00/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 -
Vendor:AAF Flanders18x30x1 NaturalAire Healthy Ultra MERV 13
Regular price $326.99Sale price $326.99 Regular priceUnit price Case of 12 $27.25/filter -
MERV 10Vendor:AAF Flanders10x20x1 NaturalAire Microparticle MERV 10
Regular price $109.99Sale price $109.99 Regular priceUnit price Case of 12 $9.17/filter -
Vendor:AAF Flanders18x25x1 NaturalAire Healthy Ultra MERV 13
Regular price $332.99Sale price $332.99 Regular priceUnit price Case of 12 $27.75/filter -
MERV 8Vendor:AAF FlandersNaturalAire Standard MERV 8
Regular price $81.99Sale price $81.99 Regular priceUnit price Case of 6 $13.67/filter -
MERV 13Vendor:AAF Flanders18x24x1 NaturalAire Healthy Ultra MERV 13
Regular price $243.99Sale price $243.99 Regular priceUnit price Case of 12 $20.33/filter -
MERV 10Vendor:AAF Flanders20x20x1 NaturalAire Microparticle MERV 10
Regular price $70.99Sale price $70.99 Regular priceUnit price Case of 6 $11.83/filter
