It’s pretty easy to put together, the instructions aren’t step by step but it’s still pretty simple to put together. If using outside I would definitely paint the outside with some sort of waterproof or outdoor paint so it may last a little longer. Also if you are to use outside I would put some sort of cover over the cage part of the door during the cold months just to keep the chill out. It is a lightweight wood but it’s sturdy enough, I would say it would fit one smaller sized rabbit.. maybe two small ones but not a big rabbit. But overall it’s just what I needed.