1200 Series 30 ft. Wide Gothic Arch Cold Frame w/ Spring Lock

1200 Series 30 ft. Wide Gothic Arch Cold Frame w/ Spring Lock


$5,132.00 Regular price
  • In stock - departs in 2-3 business days

The 1200 Series 30' Wide Arch Greenhouse can provide year-round production for commercial propagation and growing, retail garden centers and aqua culture. Gothic Arch cold frames are recognized as the strongest, most reliable cold frames available, They’re constructed from the same high-quality, galvanized steel roll-formed components as our more expensive packages. An arch greenhouse is ideal as a starter house or an overflow structure - and it adds classic gothic architecture to a yard or landscape.

Cold frame greenhouse arches are designed for single poly or double poly roof covering. They also can be fitted with shade cloth. Each frame includes pre-cut and punched components for easy bolt-together assembly. By purchasing just the frame, you can personalize the greenhouse build with your choice of covering material, doorways, venting and more. Call us toll-free at 1-888-281-9337 to learn more about cold frame greenhouses.

1200 Series Greenhouse Arch Features:

  • Made of galvanized steel with roll-formed arches
  • Up to five purlin assembles to improve wind resistance
  • Multiple standard sizes plus custom builds
  • Use polyethylene coverings or shade cloth
  • Note: Cold Frames are non-rated structures and not recommended for high wind or snow areas.


Dimensions 30' W x 24', 36', 48', 60', 72', 84', 96', 108', or 120' L x 14' 6" H
Sidewall 6' high (3' 6" available)
Frame Galvanized Steel - 18 gauge
Covering Not included
Arches (2) piece arch, 9.5" roll-form galvanized steel. Six feet center to center.
Columns Not required
Purlins (1) run 5" roll-form galvanized steel under peak. Two or four runs of 5" roll-form under the arch.
Manual 30 ft. 1210 Series Installation Manual (PDF)


The success of this Cold Frame greenhouse can be found in it's unique roll-form components offering superior strength, reduced cost, and simplified installation. The 1200 Series features a nine-inch roll form (approx. 3" tall hat). The galvanized steel frame insures maximum strength and life.

Stronger than the Competition

Dimensional Information

30' Wide30' wide cold frame dimensions

Frame Kit Includes

Included Description
Rollformed Steel Frame (18 Gauge) True commercial quality! All galvanized steel construction. Roll-formed arches and purlins offer superior strength and durability compared to the round "fence" style tubing offered by our competitors. All the nuts, bolts, screws, and brace straps needed are included as well.
Spring Lock Top and Spring Lock Deep Base Also known as Wiggle Wire, this complete fastening system provides secure attachment of polyethylene film. Have peace of mind during high winds. Reusable time after time.

Assembly Information

Step-by-step installation instructions are included. We provide online and telephone support to answer any questions you may have. For information on how best to plan your greenhouse assembly or any other questions you may have, call a Sales Representative toll-free at 1-888-281-9337.


The standard and recommended foundation for cold frame greenhouses is a piered concrete footings.

The hoop sections of the structure bolt to the interior of the sidewall posts and they extend roughly 18 inches into augered holes which are then filled with concrete. These materials are the responsibility of the purchaser to secure and do not come with the structure.

Available Options

Call us toll-free at 1-888-281-9337 to speak to a Greenhouse Megastore Sales Representative about your available options:

  • 4' centers instead of 6'
  • 3.5' high sidewalls instead of 6'
  • Additional lengths

Custom High Tunnel / Hoop House Quote

Fill out the form to receive a custom quote for your greenhouse project.

Get a Free Custom Quote


This item ships via Motor Freight Carrier - almost anywhere in the Contiguous United States

Motor Freight Requirements

  • The shipment must be delivered to a business or residence (a PO Box is invalid)
  • The delivery address must be able to accommodate a tractor/trailer as much as 70' in length
  • Someone must be present to receive and unload the shipment from the truck
  • Shipments and/or locations requiring a lift gate, inside delivery, and/or with limited access may incur additional charges by the carrier

Please contact Greenhouse Megastore Customer Service at 1-888-281-9337 if you have any questions about delivery to your specific address so we can ensure the smoothest delivery possible!

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Customer Reviews

Based on 1 review
Anthony Peterson
Gothic Arch Cold Frame

I purchase this greenhouse and absolutely love it! I was able to construct it with my father as a family project. I would defiantly recommend this product to anyone wanting to get into the business of growing, as I my profits increase, I will buy another one if still available. The free shipping was the deal maker for me, I had no problem unloading, was in excellent condition.