Amazon.com: 8020, 1001, 10 Series Aluminum 1.0 Inch x 1.0 Inch Single Channel Aluminum Extrusion T Slotted Rail 80/20 Profile (12" Long, Clear Anodize) : Industrial & Scientific
Shop Aluminum Channel 6063-T52 Architectural 2.25 (A) x 0.875 (B) x 0.125 (t) x 0.125 (t2) Online | Buymetal.com
Steelworks 3/4-in W x 8-ft L Mill Finished Aluminum Weldable Trim Channel in the Channels department at Lowes.com
1" X 1" X 1/8" CHANNEL 6063-T52 ASTM B221
Aluminum U Channel - 1inch X 1inch
Aluminum Channel - 1" Leg x 2" OD x 1.5" ID x .25" Wall - Eagle Aluminum
Speedy Metals 2" x 1/2" x 1/8" 6063 Aluminum Channel
Slotted Aluminum Extrusion - 20mm x 20mm - 610mm long : ID 1221 : $7.50 : Adafruit Industries, Unique & fun DIY electronics and kits
2" x 1" x 0.13" x 0.13" Alum Channel 6061-T6-Extruded Alum Association | Online Metals