... for surface Ambient temperature: -20 to 40° C Color temperature: 5, 500 to 6, 500 and 2, 700 to 3, 500K ... , shopping malls, office buildings, corridors and factories.modelSD-5*1W-F (white)SD-5*1W-F (warm white)SizeΦ600mmΦ60mmMaterial typeAluminum+PMMAAluminum+PMMAColor ...