I do a super simple little walkthrough in our 3 car garage every year. We have PVC rectangle frames covered in black plastic that we hang from hooks in the ceiling as wall/dividers. They are a few years old and sagging etc so I'd like to build some better ones. I was thinking about making frames out of 1x3s and sandwiching them between some kind of thin plywood etc. I have read in a few posts where people did this with 1/4 in OSB board. When I check my home depot and lowes, the thinnest they have is 7/16ths and that is 11dollars and change. Is that the thinnest stuff I will probably find?