Are you looking for the most common air filter sizes? If so, you've come to the right place. In this article, we'll discuss the three-part dimensions of air filters and how to measure them. Air filters are labeled with three-part dimensions. The first number is its length, the second is its width, and the third is its depth or thickness.
Here are some of the most common air filter sizes:
- 20 x 20 x 1
- 16 x 25 x 1
- 20 x 25 x 1
- 20 x 25 x 4
- 16 x 20 x 1
- 16 x 25 x 4
- 20 x 30 x 1
- 12 x 12 x 1
- Step 1: Measure the length and width (L x W). If the filter is not square, the smallest measurement goes first.