Our custom filter sizes are currently available in depths of 1", 2", and 4". Please make sure that you enter the correct dimensions below as we do not allow returns on custom air filters. Sizes are available in increments of 1/8th of an inch, and are sold in cases of 6 filters.

Note: When ordering a custom size filter, make sure that you select dimensions that will fit the opening. Custom filters are manufactured to the exact size that you specify. We will prompt you if the size you select meets the dimensions of a standard size filter. Read more ...