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MERV 11 4001 Filter for GeneralAire 12758 for AC1, AC22, AC3, Carrier 31MF, a...:
$54.82
Fits: Bryant 902BX; carrier 31mf020, 31mf120; source 1 s1-mac11202506, s1-fm11202506.
Merv 11
Fits: GeneralAire AC1, AC22
Micro fiber
Expandable