Panasonic ET-LAD40W 2-PK Projector Lamp Replacement Northstar AV sells OEM (Original Equipment Manufacturer) Lamps - Philips, Osram/Sylvania & SHP brand lamps inside of OEM spec housings. We DO NOT sell generic or compatible replacement lamps. Projector Lamp Model: ET-LAD40W 2-PK Compatible Projectors Models: PT-D4000 2-PK, PT-D4000U 2-PK Average Lamp Hours: 2000-3000 Hours Warranty: 180 Day Warranty (From Date of Install)