Add a 2-year filter bundle to your order, and you'll receive two annual replacement filter cartridge kits (cartridges #1 and #3, two pieces each), two hydrogen PEM modules, and one reverse osmosis membrane(cartridge #2 to be replaced after the 2nd year of use).

You'll get three years of use with this add-on!

Contents:

• Hydrogen Module. RC-HGPEM: 2 pieces
• AlcaPure Alkaline Post Filter. RC-QT-CF: 2 pieces 
• Sediment and Carbon Filter. RC-QT-PAC: 2 pieces
• Reverse osmosis membrane. RC-QT-RO: 1 piece