This new replacement front projector lamp 3797772800-S from eReplacements is 100% compatible with your Vivitek and is made with a high quality original Vivitek bulb inside a compatible housing. This lamp is user replaceable but you should refer to your projectorâÃÂÃÂÃÂÃÂs manual for replacement instructions for this lamp. eReplacements front projector lamps made with OEM bulbs like this one come with a one year warranty and will meet or exceed the original Vivitek lamp specifications because they are manufactured for high performance using top quality Vivitek replacement bulbs and the most up to date safety and engineering control standards. Brand new high quality OEM replacement bulb manufactured by Osram, Philips, or Ushio Plastic housing engineered to perfectly fit into your projector Internal safety features protect your device from electrical hazards