Designed to fit any standard 10 x 20 seedling tray, the SunBlaster Nano Dome has integrated light tracks that not only provide superior strength, but also position the T5 or LED lights just where they need to be to provide optimum light coverage. Both sizes include adjustable vents that can be used to control air flow and release excess moisture. Grooves in the top allow 18” or 24” tubes or light strips to simply rest in place. Two domes can be placed side by side to accommodate two 24” lights