Replacement Filter for  Stage 1 PuROTwist Reverse Osmosis Water Filteration System. The Omnipure Q Series sediment pre filter cartridge is suitable for our under sink reverse osmosis systems.

• Improves the quality of water by reducing dirt, sand, and sediment

• Filter Life: 6-12 months, water quality dependent

• Micron Rating (Nominal): 5

• Size: 12″ x 2.5″

• Designed and Made in the USA