Master Flow 4 in. 90-Degree Turned Standard Adjustable Elbow

Master Flow Standard 90Adjustable 4 in. Elbow is used to make turns in runs of round pipe and flexible duct through 90. It has a sturdy galvanized steel construction and is simple to adjust. It is also crimped on 1 end to easily fit into a pipe or other fitting of the same diameter. Ships in 90position.|Used to make angular or gradual turns in runs of pipe|Adjustable to any angle through 90|30-Gauge, galvanized steel construction|Always seal seams with building code approved sealant or duct tape (not included)|Always insulate ductwork for greater system efficiency and comfort (not included)