The L-series combines the best technologies into an easy to use versatile package. A patented keyed head design insures each cartridge locks into place with 1/4 turn. Heads are available with Omnipure's auto shut off valve system, making filter replacement a breeze. With a full array of media available, the L-series can address all your point-of-use filtration needs. L-series is available in 2.5" diameter, and 6", 8", 10", 12", and 14" lengths.