National

This adapter changes a 7" oval to an 8" round connection, tailored for ovalized liners with inside diameter (ID). It includes a crimped round end for straightforward installation and is crafted from...

Converts a 7" oval to an 8" round connection. Designed for ovalized liners with inside diameter (ID), featuring a crimped round end for easy installation. Crafted from robust 304 stainless steel.

This adapter changes a 6" oval to an 8" round connection. The oval end is made to fit ovalized inside diameter (ID) liners, and the crimped round end ensures easy installation. Constructed from 316...

This adapter transitions a 6" oval to an 8" round connection. The oval end is designed to fit ovalized Inside diameter (ID) liners, while the crimped round end allows for easy installation. Built...

This adapter transitions a 5" oval to a 7" round connection. The oval end fits ovalized inside diameter (ID) liners, and the crimped round end allows for easy installation. Made from durable 316...

This rigid adapter converts a 5" oval to a 7" round connection. The oval end is designed to accommodate ovalized inside diameter (ID) liners, while the crimped round end ensures easy fitting...

Use to maintain a weather tight resistant seal between the pipe and the flashing. Seal inner edge with hi-temp silicone sealant.Additional B-Vent Info:DuraVent's Type B Gas Vent system features the...