Watts (MAXVOC-975) 10" x 2.5" C-MAX Coconut Shell Carbon Block Filters - for VOC, Cyst Reduction 20 inch x 2.5 inch Filters2771 This hot-only configuration is ideal

This hot-only configuration is ideal for tea stations

The proprietary half-turn housing design of the F500398 system requires this specific F110023 membrane model and is not compatible with standard drop-in membranes

Model Number ST-1 Housing Length 10 inches (standard) Cartridge Compatibility Standard 10" × 2

The combination of KDF-55 with activated carbon significantly extends cartridge life compared to carbon-only filters

Where the E5421 Fits

Watts (MAXVOC-975) 10" x 2.5" C-MAX Coconut Shell Carbon Block Filters - for VOC, Cyst Reduction 20 inch x 2.5 inch Filters2771 This hot-only configuration is idealThe Watts MAXVOC 975 is a 10" x 2. 5" coconut shell carbon block filter engineered specifically for volatile organic compound reduction alongside chlorine, taste, odor, and sediment removal down to 0. 5 micron. Built with thick wall activated carbon block construction and NSF Standard 42 certification, this filter delivers up to 20,000 gallons or 6 months of submicron filtration for reverse osmosis systems and point of use drinking water applications.