3" PVC Collection Concentric PVC Horizontal Termination The VK3-H-PVC is an efficient, easy to install dual intake and exhaust ventilation component enabled by the state of the art technology involved with condensing tankless water heaters. This concentric termination kit allows for only one termination to be necessary on your direct vent unit, giving it a professional finish unlike any other. A bird screen is included to protect your condensing unit and the safety of your ventilation system so you can enjoy endless hot water without any troubles. Horizontal Termination: As a high efficiency condensing unit allows for PVC to be a viable ventilation material due to lowered exhaust temperatures, it is vital to follow installation instructions to ensure temperatures do not build within the venting system. The VK3-H-PVC is for 3" horizontal venting purposes only, and can not be lengthened. Follow these simple instructions and your system will be complete with both a next generation direct vent condensing unit and state of the art venting system. Features: For condensing units allowing PVC ventilation Only one termination Includes cap with bird screen For terminating horizontal applications only 3" venting for intake and exhaust 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.