My second set of Gladiator shelves.  They are easy to assemble and rock solid.  The shelves are supported all the way around at the edges and have an extra brace in the middle which keeps the shelves from sagging even if you load them up.  I did have a question on my order after it shipped but before arrival.  The customer service rep at Wayfair was top notch.  Very impressed with the product and Wayfair as a company to work with.