Please slide the door to let some fresh air in.
Slide the door open.
Please slide the door open.
First slide open the door completely and remove the head stop.
But that last one seems a bit peculiar.
It is more polite to say slide the door open.
Never leave the glass door unattended.
Please slide the door closed.
It seems like i am trying to say.
Please open the door to let some fresh air in.
Slide open door would be the imperative voice probably used here to be short and clear.