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: 550g 5. Package Info:Ctn size: 63*28*36cm, 20pcs/ctn, Gross Weight: 14KG/ctn. 6. This product works as a 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 5-15mm. 2) No sundries around, no cover on the Down Light due to heat sinking concern.