[cunninglinguist]

You can line your walls with these. Pretty strong if you drill in the studs.



https://www.rona.ca/en/steel-standard-72-white-0233571


https://www.rona.ca/en/steel-shelf-b...-white-0233510


https://www.rona.ca/en/melamine-deco...-x-36-02335510

Lee Valley has super duty ones if that's what you need.
Lumber Storage System - Lee Valley Tools
Galvanized Heavy-Duty Shelving System - Lee Valley Tools
http://www.leevalley.com/en/wood/pag...52&cat=1,43326