NP21LP / 60003224 High Quality Original Bulb Inside Replacement Lamp with Housing for NEC NP-PA500U NP-PA500X NP-PA5520W NP-PA600X NP-PA550W<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Lamp Type: Original Lamp with Housing </span></li><li><span class="a-list-item"> Part number: NP21LP / 60003224 </span></li><li><span class="a-list-item"> Model number: NEC NP-PA500U / NP-PA500X / NP-PA5520W / NP-PA600X / PA500U / PA550W / PA600X / NP-PA550W / PA500X </span></li><li><span class="a-list-item"> Rate power: 330watts </span></li><li><span class="a-list-item"> Lamp life: 2000 (normal) / 3000 (economy) hours </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51SnJdem13L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51z0NxrRANL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/511PJBR5gdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Z8%2BbycotL.jpg" noproxy>