The distance between the mounting holes is 1 1/16". It can be very difficult to match existing mounting holes. We recommend using the top hole and choosing a design long enough to cover the bottom hole.
The Dragonfly Door Knocker weighs 1 lb. We highly recommend using the included screws for mounting.
The dimensions are: Depth:1.25" Height: 5.25" Width: 6.25"
Same way as a all wooden door. Or glue it on.