... engineering *Independent motor-suspension system *low noise tubular motor *free position installation TOP VIEW MOTORIZED SCREEN SPECIFICATION1. Hign-strength ... locking bracket, convenient installalation.4. Independent motor-suspension system,easy disassemble and convenient maintanence .5.Free position ... CE,ROHS,SGS,and TUV9.Front projection and rear projection are optional10.HD glassfiber Matt White ...