Well mine were already wall mounted lol but you can just do like jaybone said and use wire to make it as far from the wall as you want. I just used some leftover speaker wire and some eyelets, but you can buy purpose made “picture hanging wire” that is good for 20-30 pounds or so if you want to be extra sure.

For real. My TV and my tower speakers both come with these sharktooth lookin picture hanger things on the back for exactly that purpose.

Pretty sure it’s an owl nesting box.