This new replacement front projector lamp VLT-X400LP-ER from eReplacements is 100% compatible with your vltx400lper lamp compatible and has an estimated lamp lifetime of approximately 2,000 hours. This lamp is user replaceable. Refer to your projector’s manual for replacement instructions for this lamp. eReplacements front projector lamps all will meet or exceed the original vltx400lper lamp compatible lamp specifications because they are manufactured for high performance using top quality replacement bulbs and the most up to date safety and engineering control standards.