1121 Series Low-Side U-Channel (14 Hole, 360mm Length) - goBILDA
CRL D321BL Black 3/8" Single Aluminum U-Channel 144" Stock Length
U-Channel Sign Post - Visual Workplace, Inc.
U-Channel Glass
Aluminum 6063 T5 U-Channel | .0625" Thickness - 1" W x 1" H x 48" L - My Metal Supply, LLC
CRL D600BL Flat Black 1-1/16" Single U-Channel 144" Stock Length - Shelving Hardware - Amazon.com
Outwater Black Finish 3/8'' Inside Dimension Aluminum U-channel 48'' Length (pack Of 3) Alu57-bk C-channel in the Furniture Moulding department at Lowes.com
1121 Series Low-Side U-Channel (17 Hole, 432mm Length) - goBILDA