Replacement Lamp Assembly with Genuine Original OEM bulb inside for DELL 4320 Projector (Power by Philips) IET lamps only use original manufacturer bulbs from well-known brands such as Osram, Osram, Ushio, Matsushita and Phoenix. IET Lamps housing units are made from durable and high quality materials and are guaranteed to fit properly. This lamp will meet the original manufacturer quality and performance standards. Last 3x longer then Generic lamps! Better Reliability, Brighter Picture, Longer Lasting. Lamp Part Number: 725-10284 180 Days Warranty. 30 Days Money Back Garrantee.