For rockler tracks the directions are to measure the height of the opening and subtract 7/8 of an inch and this is your glass size. It uses 1/4 glass and also reccomends getting polished edges & rounded corners so the glass slides smoothly. My glass for these two cost $57.23.
:The cage looks great. Hope you enjoyed making it.
:Do you remember the cut directions for the glass used with the Rockler track?
:I want to switch my cage from the K&V product to the Rockler as it better matched my mahogany finish.
:If I can leave the glass the same size or cut a little off that's fine. But if my glass is already too short I'll have to shim the track or buy new glass.