Materials: Die-formed heavy gauge cold rolled steel. Finish: Baked white acrylic matte high reflectance paint finish. Shielding: Ribbed frosted acrylic lens. Electrical: LED boards and drivers are RoHS (Restriction of Hazardous Substances) compliant. 0-10V dimming available. For other dimming options, consult factory. Total system life rated at 50,000 hours (L80). Maximum ambient temperature of 25°C when surface mounted or 30°C when suspended. Suitable for cold locations - minimum ambient temperature of -20°C. Predicted L80 lifetime based on LED manufacturer’s supplied LM-80 data and in-situ laboratory testing Labels: cETLus listed. Suitable for damp locations.