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Custom Air Filters. Build your own custom AC or furnace filter. We have done our best to list all the major replacement sizes. However, if you don't see the size ...


Custom air filters for the exact measurements you need. Our custom filters tailor to your unique AC & furnace specifications. Free shipping on all orders!


The minimum size is 5" x 5" and the maximum is 40" x 40". · Please Note: Due material limitations used to build a custom filter, we construct a double f...


Having trouble finding your size air filter? We can make and ship your custom size filter within 24 hours of your order and ship it to your doorstep. AirFilters.com  ...


Build your own custom AC or furnace filter! Air Filters, Inc. has the capabilities of custom manufacturing any and all types of air filters. Specify your requirements ...


For 65 years, Air Filters, Inc. has supplied a variety of industries from medical to OEM for their air filtration needs. From stock to custom products, Air Filters, Inc.


Customize air filters to your specs. Custom air filters of all sizes made to fit your AC. Low prices, quick, high quality, FREE shipping, MERV 8-13 ratings.


All custom size air filters are built to tolerances of + or - 1/8". CAUTION: Most air filters are stamped with a size that is NOT the actual dimension of the filter.


Results 1 - 24 of 696 ... (Custom Size) Air Filters.


Custom air filters online - made to any odd size. Our patented air filters fit perfectly, no matter what size air filter you have at FilterFactory.com.