P/No.
Material
Opening Dimension
Flange Dimension
Spigot Depth
#121000
SS304
4"*10"
6-1/4"*12-1/2"
1-1/2"
#121600
5"*12"
7-1/4"*14-1/2"
#122200
7"*14"
10-1/4"*17-1/4"
The thickness of glasses is 6mm and the screw size is suitable 1/4"