This Hydronix SDP-4510 Sediment Dual Purpose Radial Flow GAC Carbon Filter is best filter in the market for Dual Purpose Filtration and is comparable to the FXHTC, RFC-BB and AP817, replacement filter cartridges at a much better price. It provide a unique design combining all the benefits of a Granular Activated Carbon (GAC) filter and that of a Sediment filter. This filter produces higher flow rates and lower pressure drop while providing you with exceptional chlorine taste and odor reduction. Compatible Housings: W10-PR, W15-PR; AP801 ; HD-950 ; GXWH30C, GXWH35F, GXWH-40L, GXWH-30C, HDSFI, GXWH-35F, GNWH-38F ; Hydronix HF45-10BLBK34, HF45-10BLBK34PR, HF45-10BLBK10, HF45-10BLBK10PR, HF45-10CLBK10PR, HF45-10BLBK15, HF45-10BLBK15PR ; 150469, 150237, 150238, 150239, 150240, 166081, 166083, 166219; PL10B30; WHCF-WHPLBB ; Most brands' 10" x 4.5" housings. Specs: 4.5" x 9.75" ; 40°F to 125°F (4.4°C to 51.7°C) ; Filter Media: Granular Activated Carbon ; Outer Shell: Polyethylene ; Inner Wraps/Core: Polypropylene ; End Caps: Polypropylene ; Gasket: Buna-N.