... pressure sodium lamp or high pressure metal halogen lamp. 2.Lighting protection level:IP55 3. Electric box protection level:IP44 4 ... ,highways,stadiums,flyovers,etc. features 1.Simple structure, large area lighting, good lighting effects, concentrated light,light uniformity, glare small, easy to ... skeleton3.fasteners bolts, stainless steel nut 25m 400w HPS high mast light for airport and square