The Sun Blaze T5 4Ft fixture is an excellent light source for growing plants. Offers an energy efficient high output ballast for long life. Light weight and easy to install with mounting hardware included. Fixture comes with one 6500°K (blue) T5 HO lamp and a plastic removable cover for the lamp. Accommodates standard 2 ft and 4 ft replacement lamps. On/off switch for ease of use. Includes power cord and 4 in jumper cable to daisy chain multiple fixtures.