Quoted from phillyfan64:CPR says give it at least 30 days to cure. What’s the general consensus on storing these during that time? Flat, standing on end like the photo, standing long ways? Does it even matter?
Store it flat on it back. Preferably under your bed, under the couch, or under a machine. You can put the brown paper it came in back on it to protect it from dust, but don't wrap it up tight. Just kinda gently lay it on top, so that the solvents can evaporate off and the clear can chemically cross-link.