The Dt4 4" horizontal condensation drain tee maintains the design of the easy connect quick-snap fittings while introducing a unique gasket for the Dt4 to further ensure a tight seal where it's needed most. The beauty and durability of Noritz's stainless steel design help ensure a long lasting tight seal for you and your home's protection. 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. Drain Tee: Used for added protection to your heat exchangers. The drain tee helps capture excess condensation that builds up within ventilation systems to avoid costly repairs and replacements. In addition, the piece is part of the N-Vent series so it's approved for tankless and boiler stainless steel exhaust installations, enabling you to know you've made the right choice in both form and function. Features: High temperature rated stainless steel Protects from moisture and condensation Introducing the latest advancements in tankless water heater technology for your home, Noritz tankless hot water heaters are both eco-friendly and energy efficient, providing savings up to 40% in utility costs. Their gas water heaters warm water on demand, which means you'll always have hot water and it will never run out.