Sturdy and very easy to put together, used a rubber mallet and it took minutes with two people working together. Storing heavy buckets on the shelves and no buckling etc.

Bought this storage for the size. It's perfect fit for my small room indoors. I was looking for 5 shelves. All other 5 shelf systems were larger in shelf size, and I don't have the additional space. Quality is excellent. Seems like steel. I put a lot of weight on all shelves. The plastic shelves I had before started to sag in the middle, so these are 1,000 times better. Also, in high temperature indoors, the plastic legs got weak and eventually bent. Nothing like that here. What holds the shelves in place are plastic rings that wrap around the metal support bars. I was skeptical at first because plastic can get compromised in high heat. So far, holding up. I did add another shelf to get to 5. I had to purchase separately from same manufacturer. But that added to total cost of system. Well worth it because I now have a compact 5 shelf system which was original goal.

Very impressive quality.

This is the second 4-tier pro shelving unit I've purchased. They work absolutely perfect for storing heavy items and they support the weight that they claim to hold, and look good doing it.

This is the second 4-tier pro shelving unit I've purchased. They work absolutely perfect for storing heavy items and they support the weight that they claim to hold, and look good doing it.

I appreciate that each leg has a leveler, important in my basement. Sturdy; I have it filled with gallon cans of paint.

It can be tricky getting the higher shelves in place by yourself so try using a box or another shelf to hold the higher shelves level as you get the plastic pieces in place. Used for basement storage

I needed a deep, sturdy shelf. This worked fantastic!

Coating seems durable, size was as described. Have not tried outdoors.

Worked perfect for my 3D printing farm.