The box is sturdy. The delivery was made to our neighbor’s garage, and the bottom plate was bent because of the handling by the delivery company. Had to straighten it out using tools. The assembly process took time and 2 people. The screws were mismatched to the holes, and in several cases I had to use a drill to slightly enlarge the holes. In a couple of instances I had to use different screws because the holes were too large for the screws supplied. So the machining was definitely not precise. Finally, at the end I had to caulk the bottom seams with silicone to make them waterproof. After completing the installation, the lid is slightly misaligned with the box. 

All in all, you need to think on your feet and be ready with a drill and alternative screws, as well as have waterproof silicon ready. The box is quite large, very sturdy and heavy, and does the job it is intended for. As a final tip, I placed the box on two plastic 3/4” by 4” planks to get it off the ground a bit.