VLT-HC900LP VLT-HC900LP Replacement Lamp with Housing for HD4000 HD-4000 Mitsubishi Projectors Bulb With The Housing AuraBeam Economy Series Television Replacement Bulb. This is an Aurabeam Economy Series lampl For a Brighter & Sharper Picture look for the Aurabeam Professional Series replacement lamp. 180 Day Warranty Included. Exclusive Bulbs is the only authorized reseller of AuraBeam Lamps