12758 / 4001 Replacement Micro-Fiber “No-Tear” expandable MERV 11 high efficiency media 12758/4001 Replacement Micro-Fiber “No-Tear” expandable MERV 11 high efficiency media Replacement Micro-Fiber “No-Tear” expandable MERV 11 high efficiency media for Models: GeneralAire AC22, AC1 and AC3. Fits: Source 1 Model S1-MAC11202506 Also fits: Carrier 31M020100 and Bryant 902BXX020, Bryant 902BX; Carrier 31MF020, 31MF120; Source 1 S1-MAC11202506, S1-FM11202506 *Bryant is a registered trademark of United Technologies Corporation (UTC). *Carrier is a registered trademark of United Technologies Corporation (UTC). *Source 1 is a registered trademark of Johnson Controls, Inc.