Amazon.com: RHKING Strut Channel Connector Extend Bracket Stable Connection Accurate Positioning for use with 1-5/8" Wide and 1-5/8" Height Strut Channel : Industrial & Scientific
Everbilt 1/2 in. x 1-1/2 in. x 36 in. Plain C-Channel with 1/8 in. Thick 800197 - The Home Depot
Jindal Mild Slotted Channels
Channels | The Steel Yard
Mild Steel Channel for Sale Near Me - Tampa Steel & Supply
Everbilt 2 in. x 36 in. Plain Steel C-Channel Bar with 1/8 in. Thick 801217 - The Home Depot