Heated air vent to prevent vacuum formation for easy Door opening in Freezer

[liquidmonkey]

Does any one providing a pressure equalization valve with heated air for easy door opening.

The application for Deep Freezer (-86°C).. After some time Frost built up & vacuum formation makes door opening tough.

Thanks in advance

[sedgy]

liquidmonkey,
heated air? in india ? wont fresh air do?
sedgy,