Carbon Tubing and Pipe Distributor - Pennsylvania Steel
It's not perfect, but I made this shelf from scrap square tubing we get from metal palettes, and scrap fence posts I found around the work yard. The top shelf is made
Stainless Steel Tubing Sizes Chart
1.5" x 1.5" x (0.188" W) x 25 inches, Steel Square Tube | eBay
Square Tubing "Construct" | VKF Renzel
Have a question about Everbilt 1 in. x 36 in. Zinc-Plated Punched Square Tube? - Pg 1 - The Home Depot