Information needed from you...

Describe your DUT. (Device-Under-Test) ...what is it?
Define your DUT...width? height? length? weight?
How many DUT's to be tested at once?
Describe any associated fixturing/cabling.
Define desired Temperature Profile (high/low temperatures, dwell times & any ramp-rate requirements).
Any Calibration requirements.
Address of where chamber will be delivered.
List any chemicals/vapors that are involved in the test setup.
How many weeks/months of testing are expected?