AWO SP-LAMP-009 Premium Replacement Lamp with Housing for INFOCUS X1/X1A/LPX1/LPX1 EDUCATOR/LPX1A/LS4800/ScreenPlay 4800/SP4800/C109;Knoll HD101 AWO Premium Quality Projector Lamp with Housing Fit for INFOCUS X1/X1A/LPX1/LPX1 EDUCATOR/LPX1A/LS4800/ScreenPlay 4800/SP4800/C109;KNOLL HD101, The Professional Replacement Lamp Provides Clear And Bright And Sharp Pictures For Home Theater, School Presentation, Business Meeting etc AWO is Responsible For All The Item Descriptions And Coming With 180 Days Warranty And Lamp Lifetime About 2000-3000hours All Lamps Will Be Test Before Delivery, All Messages Will Be Respond Within 24hours, Excellent Return Service And Friendly Customer Service