Omni Corporation U25-S-05 Omni U25E Clear Whole House Water Filter System Whole house water filter with built in shut-off valve allows you to turn off the incoming water so you can change your cartridges Extend the life of your water using equipment, such as water heaters, dishwashers, ice makers and other appliances by allowing them to operate more efficiently, saving money and energy Clear housing allows you to see your filter working and helps to determine when to change your filter Includes TO1 cartridge to reduce sediment, sand and dirt and rust particles For use in homes with 3/4" incoming water line