Screen International Screen Winch 450cm Wide. This Screen Winch System enables the lowering down to 7 mt. of electrical screens from 300cm to 450cm wide. The Screen Winch is supplied with a manual switch but can be also controlled via an external multichannel RF remote control. It is supplied with six brackets: three for fixing the winch to the ceiling and three for mounting the screen to the beam. A cable coiler, to be fixed to the ceiling behind the screen winch, is included; its purpose is to supply power to the electrical projection screen. A safety device is built-in in order to offer maximum security in case of any failure of the mechanism.