Nominal Size: 20 x 25 x 5, Actual Size: 20 1/4 x 25 3/8 x 5 1/4 (20.25 x 25.38 x 5.25) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. Measure the actual depth of your current filter to make sure it matches this 5 1/4" Goodman Replacement filter and ideal for high efficiency air filtration and those with moderate allergies Nordic Pure MERV 12 is equivalent to MPR 1500-1900 Made in the USA