Quote for negative pressure glove box

Hello there, We are looking for a negative pressure glove box with airlock chamber and vacuum pump for high altitude simulation. The system would need to be able to vacuum down to at least 69 kPa, and also need to be able to handle positive pressure, but just increase pressure to slightly for about 500ft above sea level; The side chamber will be necessary to transport samples into the chamber for sample measurements; If your pressure gauge are calibrated with certification from factory, or if we need to send those gauges locally for calibration. Please provide some options you have with cost information. Thank you, Wenyue Li