Thicker plywood for 1000kg Rack It Shelving available 600mm wide from Bunnings

1000kg Rack It MDF shelves are a bit flimsy IMHO. Bunnings have Plywood Sheet already cut 600mm wide and 32mm thick. Bunnings will even throw in 1 cut for free so you can trim it to suit your rack.
Bunnings threw in 1 free cut for me, I hope they will for you but no guarantees! :-)
I receive no kickbacks for this from anyone, it's just what I used.

[@Dave30867]

Yeah the 10mm MDF warps over time and is not sturdy .