PCMD, LLC. Projector Ceiling Mount Compatible with ViewSonic PJD7828HDL PJD7831HDL PJD7836HDL Pro7827HD (5-Inch Extension) 100% Aircraft Aluminum (6061-T6) Construction All the necessary hardware included Detailed instructions for easy and quick installation Sets the projector approximately 5 inches away from the ceiling Max Tilt: +/- 80 degrees