Navien Tankless Water Heaters 30022799B 3" Common Vent Collar Kit NFB-C

The NAVIEN TANKLESS WATER HEATERS 30022799B Common Vent Collar Kit is a venting connection component used in compatible tankless water heating equipment. It features a common collar configuration identified as NFB-C, intended to connect and route exhaust gases through the system. This kit is used where proper alignment and sealing of the connection are required for exhaust flow management. Within HVAC systems, it is positioned in the venting section of tankless water heaters, supporting the controlled movement of combustion gases from the unit to the external termination point during operation.