Custom-Sized Air Filter Policy
- Custom filters are made specifically for you and cannot be returned - please measure carefully!
- Unlike stock sizes - custom filters are made to the exact measurement that you specify.
- 1" custom filters will be 3/4" in thickness, 2" custom filters will be 1 3/4" in thickness, 4" custom filters will be 3 3/4" in thickness.
- Custom-sized air filters are built to tolerances of +/- 1/8".
- The manufacturing of extra-large sizes may consist of more than one filter taped together.