These carts have 4 tiers and 1 full length tray for each tier. They come with 4 – 2 lamp fixture with with 2-40 Watt wide spectrum lamps each fixture. They are available in a brown finish. The stand is 74″ H x 53″ W x 20″ D . The light fixtures are adjustable in height. This allow you to raise the lights as seedlings are growing. Also, this allows you to grow plants of different heights. There is an optional humidity tent available with this model.