At United Greenhouse Systems, we provide equipment to operate both simple and very sophisticated greenhouses using gear systems (motorized and manual) from Lock. These gear systems are used to drive the ventilators and curtain systems using rack and pinion mechanisms and cable drum units. Our drive systems may be programmed with the control technology provided through the Micro-Gro microprocessor units which integrate the ventilation, heating, cooling, shading, lighting, and humidity of your greenhouse environment in order to help you achieve successful growing conditions.