3" Noritz Adaptor: for certain Noritz tankless water heaters that require Z-Flex Z-Vent Stainless Steel Venting.

This 3" Noritz Adaptor has a clamp on one end to clamp onto the heater and a seal on the other end (female connector). The 3" Noritz adaptor connects the tankless water heater to the 3" Z-Flex Z-Vent Stainless Steel Venting.