The CK-Series was developed to offer our customers an alternative to higher priced replacement bodies designed to fit existing bayonet-style permanent heads. Made of highly durable injection-molded polypropylene, the CK-Series is constructed from 100% NSF (National Sanitation Foundation) approved materials.The CK-Series of replacement bodies from Omnipure... a reliable, efficient, cost-effective alternative to higher priced filter body replacements on the market.Specifications:1 Micron Carbon BlockDimensions: 2.5" W x 10" L