2nd Stage GAC cartridge 2.5 x 20. 3rd Stage Carbon Block 2.5 x 20.
4th stage Low Pressure Membranes up to 800 GPD. 5th stage Post carbon filter. Also come with a 40 gallons tank with tank valve/adapter. The item "Commercial Grade RO Reverse Osmosis Water Filter System 800 GPD + 40 Gal Tank" is in sale since Thursday, January 18, 2018. This item is in the category "Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters". The seller is "oceanicwatersystems7" and is located in North Hollywood, California.This item can be shipped worldwide.