KleenWater O-Rings Compatible with Pentek O'Ring 151122, Compatible with 4.5 Inch Housings, Set of 6 Reverse Osmosis Systems vary so we include

Systems vary so we include one O-ring with round edges and one O-ring with square edges

Water filter cartridges and membrane made in the USA

~ Flow rates up to 20 gallons per minute

(1) KWPSQC-3 carbon pre-filter

KleenWater O-Rings Compatible with Pentek O'Ring 151122, Compatible with 4.5 Inch Housings, Set of 6 Reverse Osmosis Systems vary so we includeKleenWater replacement o'rings compatible with Pentek o ring 151122 and 4. 5 x 10 inch, 4. 5 x 20 inch housings, set of 6This KleenWater brand KW101 o ring fits Pentek Big Blue filter housings along with many others using 4. 5 inch diameter cartridges. The o ring itself actually measures approximately 5. 465 inch (inside diameter). Water Filter Housing Replacement O Ring For Pentek Culligan Ametek Big Blue HD. We recommend consumers keep a spare o