He used the dimensions provided on their site, but built it with our climate and house in mind, and my mom painted it for us. I love the pretty scene I can see from my desk - the library door faces the sidewalk.
Little Free Library is an amazing movement - they are all over the world now. Check out the Libraries of Distinction for some truly fantastic LFLs - I love seeing how creative people are.
It's so fun to see the neighbors interacting with it - there have already been a lot of books in and out of the library, and people always have kind things to say about the LFL. We have a wide variety of books stocked - from toddler-appropriate board books, to young adult fiction, to non-fiction reads for adults - to reflect the diverse ages and interests of our neighborhood. When I went to the library to stock up on used books for our LFL, I discovered a super-colorful yarn bombing on the light posts and trees at the main entrance. Now, I'm thinking the support post for our LFL is looking a little blank... might need some yarn-y love.