GLARESBOT 20Pack 4.92FT/1.5M Silver LED Aluminum Channel System,32.3 * 13mm U Shape with Milky White Cover,End Caps and Mounting Clips Track Profile for LED Light Strip Width ≤10mm/0.39inch(TX-295 - Amazon.com
35 Pack 4.92FT/1.5M LED Silver Aluminum Channel System,61.8x14 mm U Shape with Milky White Cover,End Caps and Mounting Clips, Aluminum Profile for LED Light Strip Width ≤21.2mm/0.83inch(TX-090) - Amazon.com
Galvanized C Channel Steel Metal – Sheet Metal Online - Metal Supplier
Amazon.com: Industrial Metal Sales- 6063 T52 Aluminum Channel 1" x 1" x 36"-Long x 1/8" Thick : Industrial & Scientific
Amerimax Home Products 1.5 in. x 12 ft. White Aluminum J-Channel Trim 77012 - The Home Depot