The 12’ x 21’ is our largest greenhouse kit.  Whether you are a beginner gardener or a professional with a "green thumb," this greenhouse kit will provide you with plenty of room to grow. 

Standard Features:

  • Easy to assemble bolt-together design
  • Galvanized steel frame
  • Durable polycarbonate panels
  • Hail resistant
  • Lockable walk door
  • Detailed instructions - Download here

PRICE: $4,995.00 (Tax and Freight not included)

These greenhouses are not engineered. Please check local building codes before ordering.

Prices subject to change without notice.

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Available Colors…

*  Colors may vary by monitor settings.  Please contact us to get the most accurate color representation.  We will be glad to provide you with color samples. 

**  Galvalume Plus has no uniformity of appearance guarantee.  Each individual sheet, even upon delivery, may have a different color, gloss, sheen, texture or spangled appearance.  If uniformity of appearance is desired, a painted product is required. 

Click here for information about our paint warranties.