The Global Water ET 3 Stage Replacement Filter Set is a set of three water filters that help clean your drinking water. Compatible with all Global Water G3, G4, and G5 water systems, these water filters work in 3 stages to reduce and remove harmful contaminants from your drinking water. These water filters are made from a tough and durable polycarbonate resin that is mold, mildew, stain, and rust resistant in addition to being totally lead free. This water filter set has a lifetime capacity of 2500 gallons of water, requires minimal assembly, and is easily installed without the use of tools. Additionally, these water filters are tested to meet ANSI and NSF standards and can easily be used outside or commercially. If you are looking for an affordable and reliable set of water filters, look no further than the Global Water ET 3 Stage Replacement Filter Set.