Tier1 Replacement for Carrier 20x20x5 Merv 11 MF2020 / M2-1056 Air Filter 2 Pack Upgraded media rated at MERV 11 to capture 90% of particles, 1-3 microns in size Replacement for: Goodman M2-1056, G2-1056, Nordyne 918396, Totaline P102-2020, P102-2020BB and other brand part numbers ending in MU2020 Can also fit air cleaner systems Amana AMU2020, Coleman CEMU2020, Electro-Air EAMU2020, Five Seasons FSMU2020, Goodman GMU2020, Nordyne N-MU2020A, Totaline P102-BB20, P102-MF14B, P102-NC14B and York YMU2020 This product is listed and rated by Underwriters Laboratories as U.L. Class 2