Black walnut wood mortise and tenon right-angle solid wood picture frame stand, beech wood, cherry wood, solid wood, 6 7 8 10 12 14 16inch

6inch (inner frame 10*15cm) with 4inch cardboard 7inch (inner frame 13*18cm) with 5inch cardboard 8inch (inner frame 15*20cm) with 6inch cardboard 10inch (inner frame 20*25cm) with 8inch cardboard 12inch (inner frame 25*30cm) with 10inch cardboard 14inch (inner frame 25*35cm) with small 12inch cardboard 16inch (inner frame 30*40cm) with 12inch cardboard A4 (inner frame 21*29.7cm) with 8inch cardboard A3 (inner frame 29.7*42cm) with A44 cardboard