Tier1 Replacement for Carrier 24x25x5 Merv 13 AC Furnace Air Filter 2 Pack Upgraded media rated at MERV 13 to capture 90% of particles, 1 microns or larger in size Replacement for: Bryant FILBBCAR0024, FILBBFTC0024, Carrier FILCCCAR0024 and FILCCFTC0024 Original box type design This product is listed and rated by Underwriters Laboratories as U.L. Class 2