This expandable type filter is a replacement filter for the GeneralAire AC-1 filter. This filter is installed with pleat spaced (not included.) The approximate expanded size of this filter is 19-5/8 x 24-3/8 x 4-3/4.
Fits the following models:
GeneralAire 12758, 12758-4001, AC-1, AC-3, AC-22
Carrier 31MF02001, 31MF020, 31MF120
Bryant 902BXX020, 4E436, 40164505
Source-1 S1-MAC11202506, S1-FM11202506
Made by Magnet