Check the listing for details. Omnipure Q5633 Q Series Replacement Water Filter Cartridge. Condition: New. Listed at 22.95 USD. Omnipure Q5633 Q Series Replacement Water Filter Cartridge The Omnipure Q5633 is a Granular Activated Carbon cartridge used in the following water filtration systems: PuROTwist 3000 Reverse Osmosis Systems PurROTwist 4000 Reverse Osmosis Systems Twist Tap Filter Head Model QNVH B with automatic shutoff Twist Tap Filter Head Model QNVH C with automatic shutoff Twist Tap Filter Head Model QNVH J with automatic shutoff Easy to install and change, this filter is ready to go with just a flick of the wrist! The Omnipure Q5633 Q-Series Replacement Filter Specifications: Reduces Chlorine, Taste & Odor (NSF Certified) Particulates Class I Media: Acid Washed Granular Activated Carbon (GAC) Dimensions: 2.5 inches x 12 inches Flow Rate: .5 GPM Max Pressure: 125 psi Max Temperature: 100 F Capacity: 2500 gallons or 1 year In the PuROTwist 3000 the Q-5633 should be used as the Stage 2 Carbon Filter. In the PuROTwist 4000 the Q5633 should be used as the Stage 4 Carbon Post-Filter.