“This is the 2nd lot of Gorilla shelving I have bought recently for our new place. The very first time you open a box it's a tiny bit overwhelming. But you very soon get the gist and for the subsequent shelves you don't even need to follow the instructions. No bolts or screws, just slots easily together, the one essential tool being a rubber mallet. The first connection of shelves is a tiny bit fiddly but once the structure takes shape it becomes very strong. Plywood shelves are supported by a metal bar so no sagging possible.
Highly recommended for garages, sheds, outhouses etc.”