This four-step RV step measures 27" wide by 18 1/2" high by 12" deep, with the tread measuring 24". There is an 8" drop per step and the weight of the unit is 80 pounds. The weight capacity of the unit is 300 pounds. This step is a manual foldaway step, which means it has many perks that an electric step does not have. First of all, there are no wires or electrical components that you need to wire in. Second, you don't have to stress about keeping the motor in working condition. Third, set up is simple; just pull it out to set it up and push it back in to put it away. Because the steps are made of powder-coated steel, they will keep their stability and color for years to come.