Luxx 315w CMH Bulb 3100K Energy efficient. High par value Full spectrum 3100k or 4200k Superior color quality Reduced operating heat Increased plant resin production Rated life span 20,000 hours Luxx Lighting warranties the components of our fixtures to be free of defects, if used under normal operating conditions within a period of 3 years from the purchase date. Luxx Lighting HPS and CMH bulbs have a warranty period of 1 year from the original date of purchase. If the product shows defects within this period and is not due to user error or improper use, Luxx Lighting will replace the fixture or bulb. The warranty shall apply to the date of purchase. All returns and claims must be furnished with the original receipt from shop purchased and original packaging.