Hi guys, I would like to make shutters for a winter cabin, I've attached a pic of the window in question. Originally it had one large piece of reinforced plywood that hung from 2 hooks and had twist locks on the sides and bottom to keep it from swinging. However it is just too heavy for me to handle on my own as I have to climb up a ladder while lifting this large sheet of plywood ahead of me and try to hook it onto the two hooks. I've decided to instead to install hinged shutters and that could more easily manipulated. The window is about 54 inches high and 66 inches wide. The wood around the frame is 3 3/8 inches wide. I didn't think there would be much to making shutters. I bought some plywood and cut out the doors but didn't quite know what I should do about reinforcing them and on which side would be the best. I would appreciate any suggestions you may have.