Shop Aluminum Channel 6063-T52 Architectural 1.5 (A) x 1.5 (B) x 0.125 (t) x 0.125 (t2) Online | Buymetal.com
3" x 1.410" x .170" Aluminum Channel – Des Moines Steel Inc.
Outwater Mill Finish 1-3/8'' Inside Dimension Aluminum U-channel 36'' Length (pack Of 4) Alu578-m C-channel in the Furniture Moulding department at Lowes.com
Everbilt 1 in. x 1 in. x 1/8 in. x 48 in. Aluminum Trim Channel 800177 - The Home Depot