Kosrae RLC-079 replacement projector lamp with housing Fit for VIEWSONIC PJD7820HD/PJD7822HDL projector High brightness and colour performance -- applicable to classrooms, conference rooms, churches and other commodious venues Long service life: Average 2500 Hours, without repeated replacement 30 DAYS MONEY BACK AND 180 DAYS GUARANTEE--Risk-free purchase Fit into the following projectorsVIEWSONIC PJD7820HD PJD7822HDL Manufacture by Kosrae