Package included:1* Electric joint box2*Rollers2*CreepersThe electric roll-up motor + controller for the greenhouse, it can be used extensively in the greenhouse. Such as the solar greenhouse, vegetable greenhouse, culture greenhouse, poultry&livestock greenhouse, multi-span film greenhouse and other assembled greenhouse, by which to open or close the side or top film curtain through the rolling film bar,The bundle is a complete kit (Only need extra cables for connecting the motor to the controller.)