I ordered Chevy Duty replacement vent glass for
my 55/1st. Set the new on the old for comparison...exactly the same. Dry fit the glass into the assembly and snugged it up to the division strip and marked the glass so I wouldn't set it into the frame too far. Soaked the setting tape and installed the glass. Trial fit the frame into the assembly with new hinge rivet. The window closes right up to the division strip rubber...BUT it is barely seated in the vent window frame. It almost seems like the glass has to be larger. Stuart.