there made as replacement lights for the security light houseings. they use mh and hps for the lighting color reasons there so little wattage. altho cleaning up my work i found two complete 1000watt light sets 2 220v sun master ballest's 2 hydro farms air cooled hoods one with a 1000watt mh light and one with 1000watt hps light. there just a little dusty. im gunna ask my boss if i can get them off his hands, or just bring some black garbage bags to work soon. all i know is i must get my hands on them..... he told me a story of how he gets stuff like that free all the time because one of our contractors we do construction for happens to be a huge dea building. thats just stuff we find in the dumpster there i guess.. trust me i had one hell of a day at work once i found these and then found 7 2foot by 2foot cfl hoods all prewired with bulbs but just dusty as hell.