Takagi and A.O. Smith - PVC Concentric Termination 9007611005 ( please read ad)

Description

Vent concentric termination kit
Allows combustion air to be brought in from outside and exhaust gases to be discharged to the outside through only one opening in the exterior wall or roof
Designed for use with the Reliance Condensing Tankless, & other direct vent models approved for non-metallic venting
Mounts horizontally or vertically
PVC/DWV dual chamber construction.
4" air intake pipe outside
3" exhaust pipe inside
Please see in pics (The last 2 pics are the part that is broke and not included) one part is damaged and broke only have the 2 pipes showing in the pics.