@spooke sure u can. I’ve wooden frame as well. I bought this https://www.obchodprodilnu.cz/paska-montazni-pozinkovana-1071.html (sure u can buy it in hobby market for about 5 Euro or somthing like that), cut the piece as the width of your frame (u can use 2 pliers and bow few times) use 2 screws to mount to back side fo frame (use the whole in the metal plate), use 2 screws into the wall and “hang” it like a picture… it works - I can send my pic… Instead of wall-screws u can use hooks…