Amazon.com: 4 FT - 1/4" Aluminum Channel 1/16" Walls x 5/8" High 6063 Alloy T-6 Temper Clear Anodized : Industrial & Scientific
C-Channels (8-sizes) - VEX Robotics
Outwater Satin Finish 7/8'' Inside Dimension Aluminum U-channel 46'' Length (pack Of 3) Alu357-s C-channel in the Furniture Moulding department at Lowes.com
Steelworks 1/2-in W x 8-ft L Mill Finished Aluminum Weldable Trim Channel in the Channels department at Lowes.com
Aluminum Bottom Seal Retainer 2" x 2" C-Channel, 8'2" (Part # BRA-200200C)
Aluminum Sharp Corner Channel (†C Channel†/ “U Channel†) - Monarch Metal
Alloy 6063 Aluminum Channel - 1 1/4" x 1 1/4" x 1/8" x 90" - Shapiro Metal Supply
8" x 3.75" x 1/4" x 0.41" Alum Channel 6061-T6-Extruded Alum Association | Online Metals
MetalsDepot® - Buy 6061 Aluminum Channel Online!
Hillman Steelworks Aluminum Mill 5/8 In. x 4 Ft., 1/16 In. U-Channel - Gillman Home Center
Amazon.com: Outwater Alu578-M Mill Fin 1-3/8 Inch Inside Dimension Aluminum U Channel C Channel 72 Inch Lengths (Pack of 18 Pieces, 108 feet Total) : Everything Else