Awesome storage unit!!! This is my third one. These are heavy duty without being clunky. The casters are great and make it easy to move shelves when loaded. I use these units in my studio and I can move them for cleaning and rearrange based on current projects. I store bags of clay, tools, glazes, works in progress etc. will replace the 3 remaining wood shelving units over the summer with more WFX Utility rolling shelves. Highly recommend