... vents: 1.ISO9001,14001 certified, 2.waterproof grade: IP67, 3.long life time, Materil:ePTFE LED street light vents:1. Grade: IP67 ... .2.waterproof,but air can go through, 3.equalize ... installation ,long working time. ePTFE LED street light vents is widely used in: LED outdoor lamps, LED street lamps, under-water lamps,automobile ...