I bought one of these several years ago. Then I decided one was not nearly enough. I think I have purchased at least seven of these over the years and truth be told I would love to order at least two more. The quality is excellent. I would not want to try it but I bet you could exceed the 600 pound limit on these. I like the fact that I can roll them around easily. I have some of these in my garage and if I need to make space for a project I just roll these out of the way. the wheels are lockable which is another thing I like about these. Sam's has an excellent price on these. I've seen shelves similar to these elsewhere but lower in quality and much higher in price. Honestly I do not see how sam's can sell these at the price they do.

Theses things are awesome. Will order more

Very nice sturdy shelving unit and a shower curtain liner makes a perfect cover.

Great item and easy to put together

Great heavy duty storage!

Easy to build, very sturdy

Love it!!! Extremely sturdy and solid. Would buy again!!

Bad. Boxes opened. Liner for shelves missing. Shelves bent.

Great value from high end vendor - super solid at a great price

Awesome shelving system for my wife's craft room. We COULD NOT BE HAPPIER WITH THEM