RE-BULB services relamps spent ( used ) front and rear projector module units. There have been some concern expressed about the industry's safety and quality associated with the RE-BULBING process. We have personally seen the process and undergone extensive training to understand all the aspects about RE-BULBING. As safety and quality are our primary concerns, we back up all our lamps with a 90 warranty just the same as the big manufactures, that's how sure we are about our products. Save some "GREEN" while we are protecting our environment.