And the last two are regular doors, and they come with 6-3/4" bottom rails, and 3-3/4" tops. So if I need to cut 6-1/2" total off one, (and 3-3/8" off the other), I'm thinking that if I cut half of 6-1/2", or 3-1/4", obviously I'd have almost no top rail left. But how much top to leave, out of 6-1/2"? There is approx. twice as much bottom as top - so maybe 33 and 66 percent, cut off the top, and bottom, respectively. That leaves (1) 3-3/8" x .333 = 1-1/8", so 2-5/8" top, and 4-1/2" bottom left, AND (2) 6-1/2" x .333 = 2-5/16", 1-7/16" top, and 2-7/16" bottom left.
I think this looks good on paper. Maybe I'll come back and try the first and second too.
Thanks
This is all in the basement.