Two 151121 Pentek Compatible Orings for 2.5 Inch Housings Pentek Compatible Filters These units drastically lose efficiency

These units drastically lose efficiency and functionality when calcium and magnesium cations precipitate during the heating process

The escutcheon plate is 1 3/8 inches which is a useful feature if a larger mounting hole exists

Precision winding patterns ensure accurate filtration ratings and high retention efficiencies

The KW4510CB cartridge is compatible to the Whirlpool Model WHEF-WHPCBB

Two 151121 Pentek Compatible Orings for 2.5 Inch Housings Pentek Compatible Filters These units drastically lose efficiencyTwo Pentek 151121 compatible replacement water filter orings for housings requiring 2. 5 inch cartridges by KleenWater. The KleenWater brand RG2K4W1 oring will accomodate filter housings which require 2. 5 inch diameter cartridges. The o ring itself actually measures approximately 3 7 8 inches (inside diameter). We recommend consumers keep a spare o ring on hand to avoid urgent situations. Replacement for: Pentek 15066 20 inch length, valve in head