3/16" glass then a layer of PVB laminate then a layer of 1/4" class then a 1/2" sealed space of air then 1/4" glass. So two glass panes, which are different t

3/16" glass then a layer of PVB laminate then a layer of 1/4" class then a 1/2" sealed space of air then 1/4" glass. So two glass panes, which are different thicknesses, one which is comprised of a laminate sandwich.