Imperial 4 in. D X 4 in. D Adjustable 90 deg Galvanized Steel Stove Pipe Elbow

The 4 in. galvanized adjustable elbow is used to make angular or gradual turns. It can be adjusted to form an angle from 0 degree to 90 degree. Highly durable, 26 gauge construction features a crimped end to easily assemble to furnace pipe and fittings of same diameter.
Used to change the direction of airflow in round branch pipe
Adjusts from straight through 90 degree
Adjustable 4 piece elbow