Waterdrop FXHTC AP810 10" x 4.5" Whole House Water Filter, Replacement for GE® FXHTC, 3M® Aqua-Pure AP810, Culligan® RFC-BBSA, W50PEHD, GXWH40L, GXWH35F, DuPont WFHD13001, Pentek® R50-BBReplacement Models: The filter can be used in any standard 104. 5 heavy duty filter housing. Compatible models: FXHTC, 3M Aqua Pure 800 Series, 3M Aqua Pure Systems AP801, 3M Aqua Pure AP810 AP811, Whirlpool WHKF GD25BB, WHKF DWHBB,4WH HDGR F01, KleenWater KW810EC. Waterdrop is an independent brand. Efficient filtration: The combination of PP filter and GAC filter effectively delivers a 5 stage filtration process, which reduces large particles and