Builder's Best SAF-T-DUCT 010155 Offset Elbow, 4.2 in Male x Female Thread, Aluminum

Use when outlet pipe on dryer protrudes up to 2-1/2 in. Can also be used where wall outlet pipe protrudes and is too large for the wall offset elbow. 4 in Dia fittings, aluminum. Turns 90 deg within 4-1/2 in. Includes one male snap-lock fitting and one female rotating snap-lock fitting.