The AquaCera LP5 CeraGrav Gravity Water Filter System with 10 inch CeraPlusFilter is designed to work without electricity, using gravity to filter the water in the upper chamber through the filter candles in the lower chamber. The AquaCera CeraPlus GAC 10 inch Filter combines a ceramic shell and a granular activates coconut shell based carbon core. The addition of the GAC allows for the reduction of chlorine, taste, and odor. The AquaCera CeraPlus GAC 10 inch Filter is for use with the GS and LP5 gravity filter systems. The AquaCera LP5 W9375016 has a 7 gallon capacity and can hold up to 5 AquaCera filter candles., making it perfect for a variety of applications from camping and emergency situations to everyday use. Can be used with 7 or 10 inch CeraPlus filter candles.