Query: 4" elbow duct
Lambro Industries, Dryer Vent Close Elbow, 4 inch. Item #2315
46 Inch 90-Degree HVAC Elbow Duct - Galvanized 26 Gauge Adjustable Sheet Metal Elbow Duct Connector, Flexible Round Tube Air Ventilation & Fully Adjustable Vent Pipe HVAC Ductwork - Easy to Install
Speedi-Products EX-26A90 04 4-Inch Aluminum 90-Degree Adjustable Elbow
Builders Best 10151 Close Elbow
POWERTEC 70105 4" Elbow Dust Hose Connector, Black, 4", 90 Degree Elbow
Whirlpool 4396006RW Dryer Elbow Vent Connector, 1-(Pack)
Fantech FEL 4 Low Profile Plastic Elbow, Fits in 2" x 4" Wall (411056), 4"
Deflecto Aluminum Dryer Vent Elbow, Fully Adjustable, 4", Silver (DE904)