... tunnel.FEATURES1,Supporting 180W lamp's cooling2,Dustproof design1,Waterproof design(IP65)2,Compared to traditional LED heatsink, our dissipating area ... , air convection is better.3,With casette structure, its easy to install led lighting, efficient for mass production.4,The cooling structure ... detail: EXPRESS: By UPS/DHL/FEDEX/TNT it takes 3- 5 days to arrive the destination.AIR CARGO:It takes about ...