Stress in low pressure box.

[CitizensBand]

I am trying to find the stress and displacements in the walls of an 11G 304SS and lexan box that contains 10" water pressure. Can anyone point me in the right direction to figure this out? The box is 72"x40"x32". One 72 x 40 face has a Lexan window 68"x36". I just want to be sure that it does not displace too far. Customer want to be sure that the walls are not overstressed. Of that I am not worried.

Thanks,