Lutema 3797631900-P Vivitek Replacement DLP/LCD Projection TV Lamp (Premium) Replaces 3797631900 3797631900-S - Lutema Premium replacement lamp provides a 70% the lifetime and brightness of the Lutema "Philips Inside" replacement lamp for your DLP / LCD Projection Television. Compatible with the following Television Models: RP56HD22A, Manufactured by MI Technologies, - A Product Proudly Manufactured in North America. For Optimal Brightness and Lifespan - choose the "Philips Inside" Replacement Lamp. Restores 100% Brightness and Lasts Longer! We recommend the Lutema Premium or Philips Brand Solutions for the best picture quality, brightness, and lifespan.