Noritz  VK3-PVC-VAS  Pvc Concentric Vertical Adapter for Use with Vk3-H-Pvc When Verticle Venting is Required Allows for single vertical penetration for intake and exhaust Elegant design and finish The product is manufactured in United States Allows for single verticle penetration for intake and exhaust Paintable surface to match rook top Superior design Convert VK3-H-PVC to vertical termination