... : High-pressure die-casting aluminum casing with powder coated finish for corrosion-resistance. Glass: Dust-proof, tempered safety glass Reflector: High ... allowed to use bulb without any radiator for a long time,otherwise, it will shorten lamp lifespan,even,it can not work ... sure the bulb base below 90. 5.The light source is not suitable for moist or corrosion environment.If need,please install ...