Relamping is essentially re-newing a projector lamp. When a projector lamp reaches the end of its life, replace the bulb on the inside with a new OEM bulb and cover for 90-day warranty. The spent lamp is recycled. The original housing is re-used, ensuring that the lamp is the exact fit for the projector. By relamping a projector lamp, both cost and waste is reduced. For more info about relamping, visit http://www.relampit.com/Relamping.php