High quality lamp with housing NP21LP / 60003224 For NEC NP-PA500U NP-A500X/NP-PA5520W NP-PA600X/PA550W/PA500U/PA500X/PA600X np23lp 100013284 replacement lamp with housing for nec np p401w npp451w np p451x np p501x np pe501x pe501x