6x2x3 enclosure build progression

[Starscream]

How do you measure for the glass so you know how big it should be to slide in properly?

The instructions on this particular track told me to measure the space where the track would be seated and subtract 7/16 from that measurement. So in this case, my "window" minus the track was 24 inches, so I subtracted 7/16 and got 23 9/16 for the height. I'm not sure if this is standard for all door tracks or just my track.

Since I wanted an inch of overlap of the glass for the door lock, I had to measure the width of the window (64 inches), divide in half (32 inches) and then add 1/2 inch (32 1/2).