CSCR-1 Noritz Concentric Storm Collar Ring The CSCR storm collar ring is a great way to maintain a professional appearance throughout your venting system. This easy to install stainless steel storm collar is used in conjunction with other Noritz N-Vent components adding yet another clean looking durable and moisture resistant piece to your ventilation 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. This stainless steel ring is added to your vent pipe to conveniently add another moisture protective piece to your ventilation system. Noritz N-Vent is approved for tankless and boiler stainless steel exhaust installations, enabling you to know you've made the right choice in both form and function.Stainless SteelProtects from wet weather conditions