I bought two of the wall mounted 30 compartment parts racks. All items arrived without damage. I attached a 36" x 54" 1/2" piece of plywood to my garage wall with 3.5" wood screws. I then attached the boards to the plywood with 1 1/2" wood screws. I screwed a few extra screws into the boards to make sure they were securely fastened to the plywood. I then attached the bins, which are now securely fastened. too Particle board/plywood. I agree with other reviewers that these bins are not strong enough to be able to remove and re-attach them multiple times. For my use, I don't plan on removing containers as I work in close proximity to them. The bins are not top quality but definitely strong enough for my use. Love the mix of smaller and larger containers as I have lots of screws, bolts, washers, lock washers, nails etc. I ordered two additional sets. The attached photo shows, how I used the containers.
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