Q5633 Omnipure Replacement Filter CartridgeThe Omnipure Q5633 activated carbon filter provides exceptional filtration at a lower price than similar cartridges from other brands. This filter features a simple twist to lock design for easy cartridge change outs. Are you looking for a more cost effective filter option without sacrificing quality or performance? The Q5633 is rigorously tested to ensure optimal filtration and is ideal for point of use applications.