John Guest Acetal Copolymer Tube Fitting, Straight Adaptor, 1/2" Tube OD x 1/2" NPTF Male (Pack of 10): Push To Connect Tube Fittings: Amazon.com: Industrial & Scientific
Vent Systems 8" to 6" Inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 200 to 150 mm - Amazon.com
Parker Hannifin 325HB-8-8N Par-Barb Nylon Male Connector Fitting, 1/2" Hose Barb x 1/2" Male NPT, White: Amazon.com: Industrial & Scientific
Atmos 1144 Extrem Tape Bar Tape Grey - Amazon.com
6 Inch Ducting Pipe 90 Degree Elbow Hose Ventilation Round Tube Bend Connector 6" - Amazon.com
Vent Systems 4" to 5" Inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 125 to 100 mm - Amazon.com
2-Pack) Tongass Rain Gutter Downspout Extensions (White) - Flexible Rainwater Drainage Can Extend from 21” to 58” - Includes Screws and U-Shape Pipe Clamps - Universal Fit for Standard Downspouts - Amazon.com