Home DIY

I have this, it’s pretty decent, certainly for the price
https://www.screwfix.com/p/5-tier-steel-heavy-duty-shelving-900-x-450-x-1800mm/2817r

After more research than I care to remember we went for Ikea Bror shelving. It's made of a thicker gauge of metal than the other stuff I've seen, and it's all galvanised steel - no chipboard shelves to eventually go mouldy etc. Will get a third one eventually.

Metro shelving comes in those dimensions

At that size, how about DIY with 12mm ply (which seems cheaper and stronger tham other 11mm / 12mm sheets at the moment), heavy duty brackets, either into the wall directly or into a bit of 2x4.