Very good 54 1

Benefits:
++ Super picture with Full HD projector
+ Canvas can be stably operated (up / down)
+ Can be engaged in any depth
+ Yet to see any waves

minor drawbacks: (you like but taking into account in the price)
-Bohrabstand Requires personal measure because instructions very scarce
-Hab Vernüftigere / stable metal steel anchors (Fischer) used for ceiling mounting (20)
-no roll-assurance when ausversehn when pulling up the draw-band releases, (young children please stay away;))
-riecht few days / weeks similar to wood paint (if screen is pulled down)
-noises: If you slow the canvas down / up pulling it's actually fairly quiet
- Unfortunately Fernbedinungs send signals not through the canvas, either devices on the side or below up or infrared extension / -en purchase (from 20), here goes fine,

So good cinema feeling comes running the sound with Dolby 5.1., Room has about 25 square meters, which is enough grade so,
Speakers (center) and subwoofer are below the screen, right / left, of course, then sideways. + 2 back