• Nominal Size: 24 x 24 x 1, Actual Size: 23 3/8 x 23 3/8 x 3/4 (23.38 x 23.38 x 0.75). • Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. • Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. • Nordic Pure MERV 12 is equivalent to MPR 1500-1900. • Made in the USA.
