About This Three-piece filter pack including (1) PP sediment filter, (1) KDF+AC filter, and (1) GAC filter. Change every 6 months 1st stage: 5 micron sediment filter that can effectively remove rust, sand, and solid impurities in the water to protect the delicate UF membrane 3rd stage: KDF media (or kinetic degradation fluxion media) with activated carbon 4th stage: post activated carbon filter. Adopting fine coconut shell activated carbon with ultra-micron aperture, this carbon filter absorbs residual chlorine, organics and odor 30-Day money back and 1-year satisfaction guarantee. Free lifetime tech support from our Atlanta base Overview Material : Carbon,Coconut Shell,Activated Carbon Product Dimensions : 11"D x 16"W x 18"H External Testing Certification : NSF Product Benefits : Removes impurities, extends carbon filter life, absorbs residual chlorine and odor, protects delicate UF membrane Removes impurities, extends carbon filter life, absorbs residual chlorine and odor, protects delicate UF membrane Brand : iSpring
