16x25x4 MERV 11 AC Furnace 4" Inch Air Filters.  Qty 2  (Actual Depth: 3-3/4") ACTUAL SIZE: 15-1/2 x 24-1/2 x 3-3/4 | 4" Inch Depth Air Filter 16x25x4 MERV 11 AC Furnace Air Filters. 2 Pack Filter Rating: MERV 11 | FPR 7 | MPR 1000. Removes airborne particles that can alleviate allergies Made in the USA