Measuring the window:
Take the measurements of the window on the inside edge of the trim from side to side and top to bottom. Subtract ½” from the width measurement to allow for the hinges and ¼” from the height measurement for proper clearance so that your shutters will be able to move freely when opening and closing the shutters.
Choosing the wood:
For my shutters, I used 1x4s and 1x2s to create four panels, two for each side that would be hinged together. You will have to play around with the different widths of wood to get the proper size to fit within the window frame or you may have to rip a few boards down to an odd size to get the exact size that you need. Cut the wood according to the measurements for your window. Also cut two braces for each shutter panel, these should be cut ¼” shy of the width measurement of your panels.