The shed is four walls on a roof, not airtight, doors don’t line up, it actually doesn’t even lock because the top doesn’t have a lock on the top of the left door. Not the best shed in the world, I’m hoping that I can get it waterproofed with caulk and foam, but sad that this wasn’t as I expected. Also, it doesn’t have a floor so if your foundation is just pavers, be ready for bugs and pests because there’s no way of keeping them out. We’re trying gorilla glue adhesive caulk and Osb to try and pest proof it more. Also, if you’re in a windy area, make sure that you can somehow tether it down to the ground, there’s no anchors, no holes to anchor, and if you do it on pavers, it probably won’t stay.  Obviously, you get what you pay for with this shed, but I wish it were a little better.