The optoma ds 9092 is a 92 diagonal 169 manual pull down screen with a self locking mechanismit has easy wall or ceiling mounting options pwc projection screens are popular because they are inexpensive and easy to operate optoma manual screens offer several outstanding features optomas matte white fabric is composed of 4 different layers including a sheet of weaved fibre glass which helps stop static electricity and most importantly prevent wrinkles and waves the screen fabric consists