ResinTech AF-20-2215-BB KDF-85 Coconut Shell GAC Cartridge 20" X 4.5" & Spa Filters The only difference is the

The only difference is the outer casing

Pre-filtration media at the entrance to the cartridge retains coarse particles

KitchenAid (Whirlpool)

The 302208 Quartz sleeve provides thermal protection for the system UV lamp and protects it from possible water damage

Dimensions: 4 1/2" x 20"

ResinTech AF-20-2215-BB KDF-85 Coconut Shell GAC Cartridge 20" X 4.5" & Spa Filters The only difference is theThe ResinTech AF 20 2215BB Aries Carbon KDF85 combination cartridges use ResinTech coconut shell granular activated carbon (GAC) in combination with KDF85 media to significantly extend the life of filter cartridges. KDF 85 is a bacteriostatic redox media that inhibits the growth of microorganisms in the filter while removing hydrogen sulfide and iron. Sized to fit standard Slimline and Big Blue housings. Features: KDF media extends the life of GAC and