OK here's the info on the trim thickness.
Current 50 breeder (no center brace)
Glass thickness = 5mm
Trim thickness = 3mm
Glass:trim ratio = 1.67
75 gallon (plastic center brace)
Glass = 7mm
Trim = 5mm
ratio = 1.4
90 gallon (glass center brace)
Glass = 9mm
Trim = 2mm
ratio = 4.5
The ratio thing I just calculated for quick reference. But I think it demonstrates the pitiful-ness of the 90 gallon trim.
Tom