The ValueLine RO Filter replacement set includes:
(1) 5 Micron Sediment Filter
(2) 10 Micron Carbon Block Filter Cartridge
(1) 1/4" FPT 10" GAC Inline Filter
Exchange out the set once every 12 months on your reverse osmosis system. The replacement membrane is for 50 gallons per day, and is not included. It should only be replaced every four years.