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 connection Unique gasket helps create tight seal Durable stainless steel finish Moisture barrier helps protect tankless water heater system (Price subject to change without notice. Check stock before order)