The EP electric motor gearboxes are maintenance-free, compact power units for generating ventilation, screening and lifting systems in greenhouses and livestock sheds. Motor gearboxes are supplied with fixing bolts and springtime washers. Motors could be sprocket drive or built with winch or belt drum. Ventilation Screening And Lifting Gearbox Greenhouse Geared Motors System Features a self-braking worm gear transmission with a patented built-in linear limit switch program with 201902071320455467551duty and security switches having superb switching precision.