Exclusively from Hydrfarm, the T5 High Performance Grow Light Reflector Kit includes uniquely designed hardware that allows you to link multiple reflectors together. Now you can easily create a light configuration tailored to suit your specific growing area. The T5 High Performance Kit fits most T5 fluorescent grow lights, is available in a 2-foot and 4-foot reflector, and includes special "linking" hardware. Super reflective interior finish directs more light energy to your plants. increases efficiency of any T5 grow light. hang it any way you like. Use it as a center light, down light, or side light. Daisy chain up to 8 units and connect in numerous configurations. easily connect together without tools.