Amazon.com: 1 Pc 1" OD x 3/4" ID x 12" INCH LONG CLEAR EXTRUDED ACRYLIC PLEXIGLASS ROUND TUBE - 1/8" WALL : Industrial & Scientific
Amazon.com: BOX USA BP3024KHD Heavy-Duty Mailing Tubes with Caps, 3" x 24", Kraft (Pack of 24) : Office Products
1 Inch Rubber End Caps Round Rubber Caps Plug Insert Decking Caps Black Rubber Tips PVC Flexible Vacuum Caps Plastic End Caps for Pipe Tube Pack of 12 - Amazon.com
Amazon.com: uxcell PC Rigid Round Clear Tubing, 17mm (0.67 Inch) ID x 20mm (0.79 Inch) OD, 0.5M/1.64Ft Length Plastic Tube 2pcs : Industrial & Scientific
Amazon.com: Portable Air Conditioner Hose | Portable A/C Exhaust Hose with 5.9" Diameter Anti-Clockwise Thread | Compatible with Most Brands of Portable Air Conditioners : Home & Kitchen