DuraVent PolyPro Concentric 45 Degree Elbow: a gentle turn around obstacles in the vent path
The DuraVent PolyPro Concentric 45 Degree Elbow is an elbow that turns a concentric vent around an obstruction. Its gentle bend helps the vent pass a beam, duct, or another obstacle. The smooth inner lining is shaped to reduce the condensate, or liquid from the exhaust, left inside the elbow. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters. Choose the size that matches your vent: 2 by 4 inch, 3 by 5 inch, or 4 by 6 inch.
A horizontal concentric run needs to fall back toward the appliance without low spots that collect liquid. This lets condensate return to the appliance or a drain, following the appliance maker’s drainage instructions. Keep the vent system to DuraVent PolyPro components rather than mixing brands or connection methods. Another brand’s polypropylene pipe can connect only through an adapter DuraVent makes for that purpose. Any passage through a fire rated wall or floor needs approved firestopping to seal the opening around the plastic vent. Need a sharper turn? See the DuraVent PolyPro Concentric 90 Degree Elbow. The DuraVent PolyPro Concentric 45 Degree Elbow ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

















































