Compatible Projector Lamp Replaces Promethean EST-P1-LAMP This new replacement front projector lamp EST-P1-LAMP from eReplacements is 100% compatible with your Promethean and is made with a high quality original Promethean bulb inside a compatible housing. This lamp is user replaceable but you should refer to your projector’s manual for replacement instructions for this lamp. They are manufactured for high performance using top quality Promethean replacement bulbs and the most up to date safety and engineering control standards. Brand new high quality OEM replacement bulb manufactured by Osram Philips or Ushio Plastic housing engineered to perfectly fit into your projector Internal safety features protect your device from electrical hazards