Pentek - RFC-20 - 20" x 2.5" Radial Flow Carbon 25 Micron FilterThe Pentek RFC 20 is a 20" x 2. 5" radial flow carbon filter that delivers effective chlorine taste and odor reduction for up to 35,000 gallons in whole house and well water applications. Its unique radial flow design combines the performance of granular activated carbon with a 70 micron polyethylene outer shell to significantly reduce carbon fines while maintaining low pressure drop at high flow rates. SPECIFICATIONS Pentek RFC 20 Core Specs