Replacement UV-C Bulb for germguardian LB1000 GG1000, GG1000CA GGH200 by Plusrite Replacement for gg1000, gg1000ca and ggh200 Please replace every 12 month to ensure great UV quality Eliminates 98% of targeted bacteria Great fit for Fits ac5000 as well The lamp listed is compatible brand only. We do not sell Germ Guardian brand lamps. All Germ Guardian brand names, trademarks and logos are property of Germ Guardian.