In message , at 18:52:31 on Sun, 29 Jul
2012, Roger Mills remarked:

I think I'd take the sash out. You should just be able to remove one
vertical section of the staff bead and lift it out

Except that if it wasn't designed to open, it ain't going to lift out!

Taking the top half out might work... but I'm not about to start
chopping out beads.
--
Roland Perry