Aluminum waterproof and dustproof tunnel lights (SYSDD - 004) a detailed description of lamps and lanterns: * the lamp body USES tensile aluminum alloy shell and cover, beautiful and easy, plastic-sprayed surface treatment, good corrosion resistance; * light panel: using 5 mm tempered glass, good impact resistance; * structure design: light easy installation, electrical integration design, easy to maintain; * sealing ring: new type of high quality, high temperature resistance and aging sealing ring; * reflector made of high quality imported mirror aluminum sheet, ensure high luminous flux of output; * light source can match: metal halide lamp/high pressure sodium lamp 70 w, 100 w, 150 w, 250 w and 400 w. * size: lamps and lanterns W310* L690 * H140 (mm) * use scope: tunnel, tunnel, culvert, urban subway and other places of underground engineering.