6inch 45 Degree Adjustable Duct Elbow for Spiral Duct - China Air Duct, HVAC Duct | Made-in-China.com
6 inch 90 Degree Dust Collection Spiral Pipe Elbow Fitting | Oneida Air Systems
12 inch Short Radius 45 Degree Quick-Clamp Elbow Duct Fitting | Oneida Air Systems
6 Inch Ducting Pipe 90 Degree Elbow Hose Ventilation Round Tube Bend Connector 6" - Amazon.com
Nordfab Round 45 Degree Elbow, 5 in Duct Dia, Galvanized Steel, 24 GA, 6 3/4 in W, 7-3/4" L, 5 in H 8010000956 | Zoro
American Metal Products 6 in. B Vent 45-Degree Elbow 6E45H - The Home Depot
Amazon.com: Vent Systems 6'' Inch 45 Degree Duct Connector 3 Way Hose Adapter/Splitter for Hose T-Shape Round Pipe Connector- Extractor Fan - Duct Hose Dryer Vent T Connector - 6 Inch 3
6" PVC Duct 90 Degree Elbow, 1034-90-06
Steel, For 6 in Duct Dia, 45 Degree Elbow - 45ZC40|8010003686 - Grainger
Master Flow 6 in. x 9 in. 90-Degree Oval Vertical Elbow OV90E6 - The Home Depot
4" OD Elbow 45 Degree Duct Pipe Connector HVAC Galvanized Iron Adapter | eBay