Not the typical application...
Your review: After pricing expanded metal and angle iron for framing, this was a viable option for the working shelf attached to the front of an old Brinkman horizontal BBQ smoker I didn't want to replace the wood on. Used two 35" lengths of 1" square tube to bush the middle to the height of the rear lip of the shelf so it sits level on the original L brackets attached to the smoker. Sheet metal screws through the bracket into the tube, carriage bolts through existing holes in the shelf into the tube and it was solid. A rattle-can of black heat resistant paint and it was good to go.
Pros: Strong enough when braced properly.
Cons: Wish they came in heat resistant black, LOL.