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the OK25 O-ring helps to create tighter seals
This filter helps minimize maintenance costs by reducing scale and clogging of distribution lines
The WB-HB-20-20W Harmsco pleated filter cartridge is sized 20 x 4
directly to softener salt to clean resin
For use in heavy duty systems that accept filter cartridges sized 9 3/4 by 2 1/2 inches
Tier1 brand replacement for Carrier FILCCFNC0021 - 19 x 20 x 4-1/4 - MERV 13 (2-Pack) Coupon_tier1_ro_undersink the OK25 O-ring helps toThis Tier1 C0021 air filter is rated at MERV 13 to capture 90% of particles, 1 microns or smaller in size. Replacement for: Carrier FILCCFNC0021.
