2"  optics with 2 degrees of wedge will have 0.375" thickness as std - get optics specification now

I thought about the design after talking to you yesterday:

a, use standard 3 3/8" od  flange for your windows

b, the 2 degrees of off- set into the 10" cf design will have to be assembled in horizontal position so the teflon gaskit would stay in place

c, the vertical assembly requires that you put the 2 degrees off-set into the 3.37" flange ( one side CF - the other o-ring groove) and delrin cover plate on top of it