Amazon.com: Gzwog NP17LP 60003127/NP17LP-UM Replacement Projector Lamp Bulb with Housing for NEC P350W/P420X/M300WS/M350XS/M420X/NP-UM330X/UM330W/NP-UM330X-WK1/UM330W-WK1/NP-UM330XI/UM33 : Electronics
Amazon.com: Lutema Original Ushio Projector Lamp Replacement with Housing for NEC NP17LP-UM : Electronics
Np17lp Replacement Bulb Projector Lamp For Nec M300ws M350xs M420x Np-p350w Np-p420x P350w P420x Um330w Um330wi2-wk Um330x, Etc. - Projector Bulbs - AliExpress