LED down light 1. Housing: Aluminium material with white outer surface, good heat conduction. 2. Working Temperature: -10 +40 3. Life Time:40,000hours (brightness maintenance rate 70%) 4. weight: 935g (except driver) 5.Package Info: Ctn size: 50*50*31cm, 18pcs/ctn, Gross Weight: 24KG/ctn. 6. This product works as an replacement of traditional Down Light. It can be widely used for hotel, restaurant ,commercial & home lighting etc. 7. Notes: 1)The thickness of ceiling material should be 5-20mm. 2) No sundries around, no cover on the Down Light due to heat sinking concern