GAC-BB GAC-BB10 FXHTC GAC WGCHD compatible filter, by KleenWater Granular Activated Carbon Replacement Water Filters 4.5 x 9.75 Inch Compatible Cartridges: GE FXHTC, Pentek GAC-BB Big Blue, RFC10-BB, RFC-BB, Watts GAC-BB10 Ametek GAC-10-BB, RFC-BB, Culligan RFC-BBS, RFC-BB, WHIRLPOOL WHCF-WHPCBB, US Filter American Plumber WGCHD, Kenmore 34378, 42-34378, Liquatec UDF-10BP, 3M AquaPure AP817