A: Johnnybgood, Thank you for your question. This post is designed to fit the Centura 18 in., 24 in. or 30 in. towel bars (sold separately). Most 3/4" square diameter rod will fit. I hope this is helpful. Best, Customer Care Team
A: these posts are made to use 3/4" square tube, stocked close to the same location in the store. They will support the tube 36" long, no problem
A: Oldrick, Thank you for your question on the Centura Towel Bar Posts in Chrome. The mounting screws are standard #8 x 1-1/4" Combo Oval Head Tapping screws and not stainless. Best, Customer Care Team
A: Skip, Thank you for your question on the Centura Towel Bar Posts in Chrome. To better assist you with store availability, please reach out to your local The Home Depot sales associate. Best, Customer Care Team
A: Yes, the toggle bolts for installation in the bathroom/drywall are included.