Gravity Door

A gravity door is a simple barrier which may be opened or closed. It is airtight, but a door opened between a less pressurized space and a more pressurized space will result in a pressure transfer. An airlock avoids this problem.

A gravity door is intended for use in an area of the ship which enjoys artificial gravity generated by centrifugal force. Therefore, it is two meters tall rather than one, allowing for vertical ingress and egress.