Twin quantum board with an oversized 200 watt driver. This is the power level where most amateur growers end up as they become intermediate growers. With a high efficiency 200 watt driver you will maximize your yield without hurting your hydro bill. 24" x 10" x 2.5. Rare external dimmer cord for sealed grows.660mn red to enhance density. 760 nm infared for plant health. Comes to you fully assembled, tested and verified to meet factory specifications with a ppfd meter. Comes to you in the factory box, ready to hang.