hi, no i dont have a reciept, its been thrown out. but i can reference that i just replaced the bulbs on feb 13. before i bought my new lighting setup.
http://canreef.com/vbulletin/showthread.php?t=49557
and they were in used until the day i almost cooked my tank referenced in this thread
http://canreef.com/vbulletin/showthread.php?t=50351
guess without reciept you would just have to take my word if you trust it, i have included 3 old bulbs with the hood and only selling this because it is still very new.
if still interested let me know