The high quality coconut-shell carbon block filter turns tap water into cleaner, healthier drinking water. Cleaner water straight from the tap by let water passing through the countertop water filter Perfect for campers, RVs, apartments, and houses Universal Parts for Easy Replacement: The replacement cartridge (FC15) is 2.5 in. x10 in. standard-sized Carbon Block filter Including filter housing with countertop stand, dispensing spout, diverter valve, tubing for installation, wrench, and manual. This countertop water filtration system is NOT expected to eliminate TDS, instead it keeps healthy minerals in the water. If you are looking for a filter that lowers the TDS value, please consider our iSpring tankless under sink Reverse Osmosis (RO) system RO500 or countertop RO water filter system RCT600.