Amazon.com: 8020, 1050, 10 Series 1 Inch x 0.5 Inch T-Slotted Aluminum Extrusion One Channel Linear Slot Bar Rail 80/20 (24" Long, Clear Anodize) : Industrial & Scientific
part# AC4 X 1.580 X .180 X 25 6061 Aluminum | Steel Supply LP
4" x 1.647" x .247" Aluminum Channel – Des Moines Steel Inc.
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
Aluminum Channel - 3/8" Leg x 3/8" OD x 1/4" ID x 1/16" Wall - Eagle Aluminum
6063-T52 Aluminum Channel, 0.750" x 0.375" x 0.125" x 48 inches
Aluminum Channel - 1-3/4" Leg x 1-3/4" OD x 1-1/2" ID x 1/8" Wall - Eagle Aluminum
Aluminum Channel – 1-1/2″ Leg x 1/2″ OD x 1/4″ ID x 1/8″ Wall - Eagle Aluminum