Material quality: High pressure die casting aluminum back-stand . High-purity reflectors 5mm thick armored glass Specific: Symmetrical type and asymmetrical type of grading at option excellent control for dazzling. Integration of the electrical appliances and lamps and lanterns with nice-looking shape with convenient installations. The lamps and lanterns are provided with dust and damp-proof property with its effects reaching high up to IP65. May be matched in use with 250W-400W sodium lamps or metal halogen lamps.Replacement of the bulbs by front opening with simple and protection simplified. Main application : It is suitable for natatoriums , tennis courts , stadiums , Ad boards , signboards , squares , and railway stations piers.