I ordered 2, at first we received only 1 box, with the sides and bottom, it took 3 more days to get the rest of the pieces. Just be aware,it takes 2 pretty large boxes per dog house. They seem fairly sturdy, my largest dog, 100+ lbs is laying on top like he usually does and it is supporting him. Was not here when they were put together, but my husband said it was stupid easy. I would not consider them for actually keeping a dog warm, the hollow plastic really does not do anything but block wind and rain.