... DegreeCover MaterialAl & PC ( Al back board , Al-border ; high quality Light Guide Plate)Construction dimensions600x1200x12mmLife Span >50,000hrs2012 NEW ... model, Nice design. white surface.Watts available: 5W,7W,9W,12W,15W,18W,21W,24W.Fin ... Very good heat dissipation.Wide Beam angles:10°- 120°.High brightness,High efficiency and stable driver.Long lifetime. 3 Years Warranty, ...