The Gellert insulated fresh air door is a top-of-the-line product. A heavy-duty frame wrapped in plastic coating gives a solid base with clean finish. The door itself is well insulated and is mounted to the frame with heavy-duty hinges.
The seal between the door and the frame is a rubber type with heat trace in the centre, which prevents freezing of the door to the frame. The door spring will allow you to adjust the pressure on the door from the actuator. This door will have no air leakage to the storage.
More information about Fresh Air Doors from Dayson Agricultural Ventilation
