These are great - very heavy duty. We bought two and worked out great for our basement. The instruction is a little confusing, make sure you read through all the steps before you start, it will help. It took two adults 2 hours to assemble 2 of these. Most of the time were spent discussing how tall we wanted between two shelves, so make sure you have an idea of the height of things you might want to put in there before you start (it will be a pain to remove the shelf once it is up there)