Stable, well-made material, assembly (150cm and 200cm mounted) requires a lot of patience and at least 4 strong hands. Since the roller tube is not screwed to the uprights, depending on the balcony size and distance to the ceiling, the final assembly can be difficult. (Therefore at least 4 strong hands). To follow the great good and detailed installation description exactly and to pay attention to the wind conditions, as with all awnings. In this price range a good product.