That's things rolled up and tidy again
The Roll Curtain has been rolled-up on a tube when it is in open position. The ventilation curtain can be opened or closed manually, semi-automatically as well as fully automatically (by means of a weather station).
If you wish, the ventilation opening can be fitted with a windbreak mesh or a (protective) bird netting. The curtain is available in the colours green and grey as well as in a translucent version.