This electric projector screen is used in many different places,such as schools,business meetings,home cinema,casino places or other entertainment sites 1. Synchoronous or tubular motor runs quietly, and equipped thermal protection system in order to last using time of motor. Aluminum or steel white color or black color case for choosing, beautifull housing. 2. Very good quality fabric, matte white or glass beaded or video fabric, high gain, which can let you enjoy clear and vivid picture on the screen. 3. Wireless remote and infared remote controller is optional, and changes the traditional way, which makes operation is easy. Obtained CE and ROHS Certifecate, passed LVD and EMC Testing. 21.5KG (327*17*15.5)cm