This system will cover a growing area of up to 2 x 2 1-1/2 x 1-1/2 recommended. The most powerful compact systems on the market. With the ballast assembly built into the reflector, these horizontal units are completely self-contained, and ready to plug-in right out of the box. Ideal for small growing areas. All bulbs come with a 1-year warranty you will probably want to replace your bulbs once a year for optimal performance anyway, so you're covered. The ballast features a 2-year manufacturers warranty. 150 watt high pressure sodium bulb included - delivers an amazing 16,000 lumens The color spectrum is ideal for indoor growing. Highly reflective aluminum insert. Vented housing helps dissipate heat. Durable white powder coated finish. Backlit on/off switch. 7 grounded 120 volt power cord. 2-Year Manufacturers Warranty.