Lippert FAST RAMP REAR PATIO CONTROLLER ASSEMBLY 663601Restore reliable operation to your toy hauler's rear patio ramp system with the Lippert Fast Ramp Rear Patio Controller Assembly (SKU 663601 MFG #21597). This genuine Lippert replacement controller is built for the Fast Ramp system used in many toy haulers managing the powered operation that lowers and raises your rear ramp door for use as either an entry ramp or a rear patio deck. Heavy Duty Capacity The 663601 is rated for a robust 32,000 lbs of