What a beautiful way to welcome folks into your space! Our door hangers are a perfect 18" round 1/4" thick birch plywood that you will enjoy for years to come! All are sealed . We can customize with your name or whatever you would like. We suggest placing them under a covered area to protect from the elements. Hangers are attached to the back of all signs for easy placement. Wood is a natural product, therefore there may be some minor imperfections, but nothing to take away the beauty of your do