CTLAMP 310-8290 Compatible Projector Lamp with Housing for DELL 1800MP Type: Brand new compatible projector lamp with housing Part number: 310-8290 Compatible machine model: for DELL 1800MP Up to 2000 (normal) / 2500(economy) hours Life Guarantee: 30 days Refund & 120 days Warranty; Professional customer service support. Any other problems with the projector lamp, please contact us