Directions for assembly are ok but could be better. Instructions state there are 3 “B” pieces and 4 “C” pieces and it’s actually the reverse. The B pieces have the holes for the roof. Cannot stress enough that it’s important to pay attention to how you are assembling the sides and to make sure you are attaching them the same all the way around - this will insure that the roof lines up correctly when assembled. Overall it seems sturdy and will work for our intended purpose- which is an exercise pen for our young turkeys and Guinea hens as we wait for their permanent home to be completed.