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Custom Sized Air Filters

If you’re unable to locate your size filter in our Standard Filter List, then you’ve come to the right place! Here you can build the custom size filter you need. Simply choose the size you need, (width, length and thickness) then choose the MERV rating you would prefer. The price of the filter will populate below and you’ll be able to add this custom size filter to your shopping cart.

Please note, you’ll need to make sure you input your filter size exactly as you need it as custom size filters are not eligible for return or refund. To measure your filter, take a tape measure and measure the width (short side) and the length (long side) and the thickness.

Select Your Size


Select MERV Rating

MERV Rating:

Please Note:

  • 1" Thickness = 3/4"
  • 2" Thickness = 1-3/4"
  • 4" Thickness = 3-7/8"
  • Custom Filters are not eligible for Refund or Return.

If you have any questions about ordering a Custom size air filter, please feel free to contact us via email or by phone and one of our customer service representatives will be happy to assist you.