Projecting Confidence. Stewart Filmscreen has been building the world's best, and most sought-after projection screens for over 70 years. When it came time to choose an in-tube motor to power our electric screens and our masking systems, we chose Somfy because of their durability, reliability, accuracy and programmability. It's a decades-old partnership we are proud to be part of - and we look forward to many more to come. Certified and validated drivers that work with these third party automation systems: ...and more.