True Blue Air Filters
True Blue Air Filters furnace filters come in many standard sizes, and are interchangeable with other brands that are the same size. While we may not carry the True Blue Air Filters brand specifically, we do have size-matched replacements for the filter you need.
For most sizes you will have several options to choose from so you can get a higher quality filter or save a little money with a cost efficient model. Using the drop-down boxes to the left, enter the dimensions from your existing filter.
Search More Sizes
Still need more sizes?
Build a custom-sized filter
Save Your Furnace Tip #3:
Did you know that the nominal size of your air filter is probably not the same as the actual size? Just like measurements on lumber, the actual size of an air filter is usually slightly smaller than the nominal size.