Projector Lamp for Viewsonic PJ1172 310-Watt 2000-Hrs UHP (Replacement) by Powerwarehouse Rear projection TV Accessories High Quality Replacement Bulb with housing We recommend the OEM Solutions for the best picture quality, brightness, and lifespan. For Optimal Brightness and Lifespan - choose the OEM Replacement Lamp. Restores 100% Brightness and Lasts Longer!