Vivitek 5811100784-S Bulb Projector Lamp Replacement Northstar AV sells OEM (Original Equipment Manufacturer) Lamps - Philips, Osram/Sylvania & SHP brand lamps inside of OEM spec housings. We DO NOT sell generic or compatible replacement lamps. Projector Lamp Model: 5811100784-S Bare Bulb Compatible Projectors Models: Vivitek D925TX Vivitek D927TW Vivitek D935VX Vivitek H1080 Average Lamp Hours: 2000-3000 Hours Lamp Type: UHB Warranty: 180 Day Warranty (From Date of Install)