Found the info sheet, warranty info is on page 2. Looks like a 3 year replacement guarantee from Lumatek.

http://www.bghydro.com/mmbgh/Others/...fo%20Sheet.pdf
irydyum Reviewed by irydyum on . Burn-in period for Hortilux MH? How long does it take to "burn-in" a Hortilux 1000w MH? I haven't seen anything about this before and now my plants are left in the dark...literally Rating: 5