Tier1 Replacement for Carrier 20x25x5 Merv 13 MF2025 / M8-1056 Air Filter 2 Pack Upgraded media rated at MERV 13 to capture 90% of particles, 1 microns or smaller in size Replacement for: Goodman M8-1056, G8-1056, Nordyne 918397, Totaline P102-2025, P102-2025BB and other brand part numbers ending in MU2025 Can also fit air cleaner systems Amana AMU2025, Coleman CEMU2025, Electro-Air EAMU2025, Five Seasons FSMU2025, Goodman GMU2025, Nordyne N-MU2025A, Totaline P102-BB20, P102-MF20, P102-N20, P102-RAM200 and York YMU2025 This product is listed and rated by Underwriters Laboratories as U.L. Class 2