18x24x1 (17 1/2 x 23 1/2 x 3/4) Pleated MERV 12 Air Filters 6 Pack
Nominal Size: 18 x 24 x 1, Actual Size: 17 1/2 x 23 1/2 x 3/4 (17.5 x 23.5 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. MERV 12 is equivalent to MPR 1500-1900 Made in the USA