Exhaust and Fresh Art intake built into one assembly, cut out only 1 hole in the wall instead of 2.
3 inch diameter intake, 3 inch diameter exhaust.
For tankless heaters and boilers heaters with separate intake and exhaust on the appliance.
Adjustable to fit walls 5" to 10" thick.
Any Z-Vent pipe, elbows, etc can be used before attaching the final piece of pipe to the exhaust connection on this Concentric termination.
Attach fresh air connection by using Z-Vent 3" Aluminum flex or 3" PVC.