Aluminum Channel - 2-1/4" Leg X 3/4" OD X 1/2" ID - Eagle Aluminum
Steel U Channel 1/4in | SS907
Outwater Black Finish 1/2'' Inside Dimension Aluminum U-channel 36'' Length (pack Of 4) Alu847-bk C-channel in the Furniture Moulding department at Lowes.com
Universal Clear Polycarbonate U-Channel with Magnet and Chrome Metal Strike Plate for 3/16" and 1/4" Thick Glass Shower Doors - Amazon.com
GRONGU Shower Door U-Channel with Metal Strike and Shower Door Magnet Set Fit for 1/8" 5/32" 3/16" and 1/4" Thick Glass Shower Door - Shower Door Magnet Replacement Part - Amazon.com
Upper u-channel is galvanized and used with telescoping sliding gate systems
Bright Chrome Deep U-Channel for 1/4" Glass 95" | Wholesale Glass & Supplies
Amazon.com: Newhouse Electric 1-5/8 in. 12 Gauge Metal Strut Channel with Slotted Back, Electro-Galvanized | 4ft. (SC12-4-EG) : Industrial & Scientific
Hillman Steelworks Aluminum Mill 1/4 In. x 6 Ft., 1/16 In. U-Channel - Power Townsend Company