I bought this screen, because it was in itself not bad rated. After the fast delivery I screwed the canvas on the ceiling and operated for the first time the remote control. What struck me immediately as: waves and contaminants (rust). I tried to remove it with water. Partial success. In daylight you see endless waves - not nice. Immediately notified the manufacturer. Result: I get 50 euro discount for these waves and the dirt. Nicely, for 109 euros a canvas whose waves from time to time be worse. No longer wanted the canvas. Reaction of eSmart: because of the discount I can no longer return the canvas. So can recommend the canvas and the service is limited.