Check the listing for details. Ubbink 223176PP 12” Horizontal Termination Kit for Condensing (P-4 #6282). Color: White, Condition: Open box. Listed at 39.99 USD. Ubbink 223176PP 12” Horizontal Termination Kit for Condensing (P-4 #6282) Description Rinnai RCi Series Tankless Water Heaters utilize concentric venting with an inner pipe that is designed to withstand varying flue temperature conditions that may be experienced over the life of a condensing product. The Ubbink Rolux® condensing concentric vent system is considered part of the direct vent tankless water heater, and has been tested and approved with the appliance by a third party testing agency.Features:Engineered especially for gas appliance ventingPositive fit and lock allows for installation assuranceTwo layers of pipe equals two layers of protectionSeals at every joint expand and contract with weather and temperature changes, so there's no flexing or cracking in the ventingNo flammable, messy or harmful glues, cements, or solvents are usedZero clearance to combustiblesSingle penetration through wall for both intake and exhaust