RC4 Noritz Stainless Steel 4" Rain Cap Vent   Utilize the RC4 4" rain cap to provide an aesthetically pleasing stainless steel finish to your tankless water heater venting system. The optimum choice for roof vent terminations, it provides a durable rain protective barrier to continually allow for a safe properly functioning system. As part of the N-Vent series, this product is UL approved category III venting, and is an integral part of the quick-snap connection system, known for easy installation and forming tight seals.Easy to connect Quick-Snap connectionUnique gasket helps create tight sealDurable stainless steel finishMoisture barrier helps protect tankless water heater system