The EP motor gearboxes are maintenance-free, compact power units for driving ventilation, screening and lifting systems in greenhouses and livestock sheds. Motor gearboxes are given fixing bolts and springtime washers. Motors could be sprocket drive or equipped with winch or belt drum. Features a self-braking worm gear transmission with a patented built-in linear limit switch system with duty and safety switches Ventilation Screening And Lifting Gearbox Greenhouse Geared Motors System having superb switching precision.