Nice heavy duty. 76" is a good height to fit through doors. I can manage this size by myself. I like the 36 inch better than the 48 inch I can move it loaded pretty well and two large totes fit well on the shelving. I just need to leave a little more space to be able to peek inside the totes when looking for something. I like the 5 shelves instead of four I usually have two boxes on top of each other and have to move both to get to one. Will probably need more.