Enjoy great tasting, sediment-free water on your boat with a convenient under counter filter by Watts. Filter housings are manufactured from FDA grade polypropylene and acrylic styrene and are rated for temperatures to 125F and pressures to 125psi. Sumps are offered in opaque plastic-or clear plastic so you can see when cartridge replacement is necessary. Filter cartridges are offered with a choice of pleated synthetic or carbon block filtering media. Filter cartridges, brackets and housing removal tools sold separately.