CT (click on CT to see the installation mannual) - This KDF/GAC water filter unit sits on the counter and easily connects to most any kitchen faucet. A heavy-duty ball valve-style diverter valve replaces the aerator on your faucet. In the regular position, water exits straight through its own aerator. When filtered water is desired, turn on the cold water and simply rotate the valve knob - water is routed through the filter and out its own swivel spout. Great for apartments, dorms, RV's or travel. Spout, diverter valve, and connectors are lead-free chromed brass - NSF-approved. Uses a replaceable cartridge KDF/GAC cartridge (part no. CF) (included), rated to treat 12,000 gallons. Cartridge has an integrated 1 micron absolute prefilter that can capture cysts (cryptosporidium, Giardia). Flow rate is 1 gallon per minute. It can be later converted for under-counter use with part number FK, Faucet Kit ($49.00) - see bottom of this page. Includes three diverter adapters, housing wrench, and chlorine test strips to verify when it's time to replace cartridge. 12" high, 5" diameter. 3 year prorated warranty on cartridge, 5 year on components.