Yesterday I finish two Cedar wood planter boxes. They are twenty four inches square ( height, width,and deep) with a shelf that is seven inches from the top. I used pocket hole joints but used coated deck screws with exterior wood glue.
I have two frame's and I will be doing this I love the idea and was so excited when i saw someone throwing out two old large frames! :o) Larger frame, wallpaper and smaller frames. Great idea to fill a large space and add texture.