ThermaGro Elite enclosures is the parent company and brand that TGM Greenhouses of Colorado exclusively represents. TGM Greenhouses of Colorado has been manufacturing greenhouses tough enough for the Colorado climate since 2010. Our greenhouses are durable, efficient and elegant, built with a unique sealing system that provides not only a hermetic seal on the structure but also an incredible bond on the nearly indestructible polycarbonate twin wall sheeting. They are bullet and hail proof to protect your vegetables, plants and herbs from hail storms and cold Colorado winters. We also provide greenhouse kits, porch enclosures and garden canopies.