Help for cold room glass

[evgins]

hi everybody,
i'm searching information about glass for coldroom.
i took a new jop for making coold room for test of same type product about plastic. and costumer want to me cold room that it's design temperature must be -40 °C and it must have one side 1mx1m sized glass for looking inside of room. i research what kind of glass i will use this jop.

please help me about this

good days


E. OZTURK
Mechanical Eng.

[chemi-cool]

Triple glazing with inert gas between the glasses.

http://www.thermotechfiberglass.com/WhyTripleGlazed.htm#Energy

[icecube51]

i have seen a nice documentairy on Discovery channel of clear aluminum. halfe the thickness of glas and half the weight. mabey something for coldrooms??

Ice