Notice how the plexiglass window slides along the track created by creating an "L" shaped 1 x 1 1/2.
Notice how the optional window has been mounted on the outside of the blind to avoid making contact with the sliding shooting window. If you screw down a small piece of OSB in front of the window you can use it as a rest for your camcorder. I carry a small 5" flexible 3-legged tripod that screws into the bottom of the camcorder so that I can set up the camcorder and let it film while I am getting ready for the shot.
