1100 Series Cold Frame 20' Wide - 3.5' Sidewalls

Item No. CF-203
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Shipping Ships via Motor Freight Carrier Dimensions 20' W x Varies (see dropdown above) L x 8' 6" H | View Diagram Sidewall 3' 6" high standard, up to 6' available for additional cost Frame Galvanized Steel - 18 Guage Covering Not included Arches (2) piece arch, 5" roll-form galvanized steel. 6' or
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ShippingShips via Motor Freight Carrier
Dimensions20' W x Varies (see dropdown above) L x 8' 6" H | View Diagram
Sidewall3' 6" high standard, up to 6' available for additional cost
FrameGalvanized Steel - 18 Guage
CoveringNot included
Arches(2) piece arch, 5" roll-form galvanized steel. 6' or 4' center to center
ColumnsNot required
Purlins(1) run 5" roll-form galvanized steel under peak. (2) runs 3" roll-form under arch.
WarrantyFrame - Lifetime

This greenhouse can provide year-round production for propagation and growing, retail garden centers, and aqua culture. Our Cold Frames are recognized as the strongest, most reliable Cold Frames available - constructed from the same high quality, galvanized steel roll-formed components as our more expensive packages. Ideal as a starter house or an overflow structure. Cold Frames are non-rated structures and not recommended for high wind or snow areas.

Designed for single poly or double poly roof covering and includes pre-cut and punched components for easy bolt-together assembly. Also can be fitted with shade cloth.


The success of this Cold Frame can be found in it's unique roll-form components offering superior strength, reduced cost, and simplified installation. The galvanized steel frame insures maximum strength and life.

Dimensional Information

20' wide cold frame with sidewalls dimensions

Assembly Options

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" 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.

Financing Available! $$$

Greenhouse Megastore works with HFS Financial and Pinnacle Capitol to provide financing to homeowners and businesses.

Shipping Motor Freight Carrier

This product ships via Motor Freight Carrier.

Motor Freight Agreement

  • Full Size Semi: Your location must be able to accommodate a full size semi-truck trailer of up to 70ft. in length.
  • Someone Must Be Present: You or someone else authorized must be present to unload the shipment. Exact delivery date will be arranged via phone by freight company.
LTL Freight Type FREIGHT
Replenishment System Purchase
Available for Drop Shipment Yes
Item Tracking Code PARENT
Turnaround 14
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