How To Measure Your Custom Furnace Filter's Size
It's important to know the difference between a nominal size and an actual/exact size which we explain it in detail in our Furnace Filter Size Guide. In order for us to make the correct filter for your needs, it's best that you send us the exact size and NOT the nominal size.
If the exact size is not written on your filter, please measure your filter's height, length, and thickness in inches as shown in the image below:
Send in your custom size filter request with the size in inches using the contact form on the right-hand side of this page, in this format:
height x length x thickness (example: 14½ x 26¾ x 2½)
We will get back to you with a quote within 24 hours. From there, if you wish to proceed, we will send you an online payment request. It's that easy!
Make sure that you measure the exact dimensions of our furnace filter.
NOTE: Custom filters are made specifically for you. There are no refunds/returns or exchanges on custom size orders. Please measure and confirm your exact filter size before purchasing.
