Pureglare VLT-HC900LP Projector Lamp for Mitsubishi HC900,HC900U,HD4000,LVP-HC900 Ampac Audio-Video is the only authorized seller of PureGlare lamps. ?Look for Ampac Audio-Video to ensure you're buying an authentic PureGlare Lamp.? PureGlare Compatible Lamp with 150 days warranty