These shelf units are perfect for our garage and ever growing amount of stuff to be stored. These shelves are made from steel and boast a one thousand pound load capacity per shelf. That is awesome and means we can keep things from piling up on the floor just because they may be too heavy for traditional shelving. We have a couple of these shelving units along the wall in our garage and use it to hold our cleaning supplies, air compressor tank, power tools too big for our tool cabinet, painting supplies, and other various treasures that make their way into our home. I never worry about overloading it since we do not have a ton of heavy items. The shelves can be adjusted to varying heights to accommodate your needs which is nice, plus they can also be installed facing up for a flat shelf surface or down to create a lip around the edge so things can not roll off the shelf.