14x25x1 MERV 13 (MPR 2200) AC Furnace Air Filters. Box of 6 ACTUAL SIZE: 13-1/2 x 24-1/2 x 3/4. | Box of 6 | 14x25x1 AC Furnace Air Filter MPR 2200 / MERV 13 Meets LEED Green Building criteria for minimum efficiency Filter Rating: MERV 13 | FPR 10 | MPR 2200. Industry applications: Filtration for Residential, hospitals, general health care facilities, food processing plants, telecommunications, pharmaceutical and semi-conductor manufacturing, etc. Recommended to replace at least every 90 days. Made in the USA