Take your already fabricated lids and lay them down in place on top of the frame. Place them all on there at once and make sure there is a small gap between each one so they don't get stuck. Use the 1/2" screws to attach the other end side of the hinges to the middle PVC pipe. Test each lid by lifting and making sure it comes up straight and doesn't conflict with its neighbor lids. I did not put latches on, put if you feel its necessary then go ahead.