The 4-ft wide Jump Start T5 Grow Light System is designed seedlings and house plants. However the height of the unit is a bit low and that limits the size of the plants that can be grown under it. The efficient T5 lights provide 15-20% more light than traditional grow lights. The unit has a toggle clamp for lamp height adjustment.
The JSV4 measures 50 by 18-1/2 by 30 inches. Be sure to get the unit that is 4-ft wide (long). The less expensive one is only 2-ft long.
The Jumpstart Grow Light Systems: In this video the manufacturer explains how to assemble the Jumpstart grow light system.
The unit works very well with the basic hydroponic system by the same manufacturer, Emily's garden, a 16" x 24" x 6" unit with 6 individual planters (Setting Up a Hydrofarm Emily's Garden - YouTube http://bit.ly/QBvCIL).