DELL 310-4747 High Quality Original Bulb Inside Replacement Lamp with Housing for DELL Projector 4100MP 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!