DuraVent B-Vent Pipe Increasers
Product Images
Product Details
Help & Documents
DuraVent B-Vent Increasers are used to increase the DuraVent B-Vent pipe. This is typically done when connecting two vent pipes together such as a hot water heater and a furnace which have different vent sizes. The small end of the increaser will be pointed down and the large side of the increaser will be pointing up the vent pipe.
Product Details:
DuraVent B-Vent Increasers are used to increase the DuraVent B-Vent pipe. This is typically done when connecting two vent pipes together such as a hot water heater and a furnace which have different vent sizes. The small end of the increaser will be pointed down and the large side of the increaser will be pointing up the vent pipe.
Help & Documents:
DIY Center
(AKA ‘The Rockford Files’)
From video tutorials to product walkthroughs, we have a variety of DIY resources just for you! Click the button below to view our entire library.

Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney