GK’s commercial greenhouse systems are efficient for growing, very affordable and easy to assemble. Greenhouses include the professional structure with pre-drilled holes for easy assembly and all the bolts and fasteners needed for a complete package. GK produces four main series of greenhouse styles. GK also provides custom design services to meet your specific growing needs.

GK’s 2000 Series Greenhouses are the standard for the Northwest climate. This series of greenhouses are excellent for holding heat and humidity for cuttings and starting plants

GK’s 5000 Series Greenhouses features bars across the tapered roof for the height needed for watering boom spraying, fans and heaters which provide efficient air movement and ventilation.


GK’s new The Sled Series model greenhouse was made for the homeowner or small farm market. It is structured with high quality materials at a very low cost. The 10’ x 12’ all steel greenhouse frame includes the poly-film, base and wiggle-wire for a complete package.
Soon coming to GK Machine Inc.! (Picture of a Hoop House)

GK’s Polyethylene Sheeting is a plastic film made from petroleum with UV inhibitors, fire retardants, and anti-static additives to help withstand outdoor elements for long periods of time. Plastic sheeting comes is a wide range of thicknesses. The thicker the film, the stronger it is. Polyethylene Film holds the heat in and it also diffuses light for even growth of crops. Polyethylene is also known as visqueen, poly sheeting, plastic sheeting, plastic film, poly sheet, and poly film.


GK’s Shade Cloth added to your greenhouse structure is the easiest way to cool down temperatures and increase cooling system efficiency. Shade cloth also allows for light adjustment for crops to grow at a faster pace. Woven or knitted fabric comes in a variety of sizes, shapes and spaced grommet hole placement.

GK stocks all the accessories for your greenhouse needs, including name brand Fans, Shutters, and Heaters as well as the various coverings for a complete greenhouse package.