[Ratpack]

Yep, 1/4". Looks very thick when just looking at it, but when you hold a ruler up to the edge, it is 1/4". Put one to the 90 and see what it measures, I bet it is not as much bigger as you think. I can remember measuring the glass on 120's and they were 3/8". I think when you get above 24" high and longer than 48", then you get into the 1/2" glass.