Commercial Greenhouses Built to Last GGS has been a world-class designer, manufacturer, and installer of commercial greenhouse structures since 1979 and our greenhouses are built to last. Here are the ways GGS can design, manufacture, and install the right commercial greenhouse for you. GGS Commercial Greenhouse Design Quality of plant environment is our number one priority when designing a greenhouse structure. Whether you are looking for a Coldframe, High Tunnel, Freestanding Greenhouse, or a Venlo, Curved Glass or Poly Covered Gutter Connected structure, we start with the end in mind: A Quality Commercial Greenhouse Environment. The GGS Grower Team Our team of dedicated greenhouse professionals will help you choose the best structure to fit your needs, whether you’re a floriculture grower, vegetable grower, university researcher, or operating a retail garden center. At GGS we understand that each customer and situation is unique, and we will be there every step of the way to ensure you maximize the value for your crops regarding structural requirements, heating, cooling, ventilation, benches, irrigation, environmental controls, and many other greenhouse supplies.