The best part is the double kit makes the top and bottom sit perfectly. I got two poster boards. Put them in the slots. The top corner and the bottom both need to be flush. You can see a lift in my image. That is because it is on my freezer. This is beautiful because it makes anyone able to make their image station. Mock basically.

These work great to hold my poster board up for taking pics.

Work perfectly! Nice and sturdy, thank you!!

15.75 * 15.75inch/ 23.62 * 23.62inch Background Plate Ordinary Card Buckle Photography Studio Photo Background Card Buckle