Grow Plants & Vegetables Year-Round

Made from 100% galvanized steel, ShelterTech Cold Frame Greenhouses are great for cool-weather crops that can be started and grown to maturity. They are also great for transitioning seedlings from a warm greenhouse to transition plants for the outdoors.

What is a Cold Frame?

Coldframe Greenhouse

History

Historically, cold frames were built to be used in addition to a heated greenhouse. The name, itself, exemplifies the distinction between the warm greenhouse and the unheated cold frame. They were frequently built as part of the greenhouse’s foundation brickwork along the southern wall (in northern latitudes). This allowed seeds to be germinated in the greenhouse and then easily moved to the attached cold frame to be hardened-off before final planting outside.

Coldframe Greenhouse

Characteristics

Cold frames are found in home gardens and in vegetable farming. They create microclimates that provide several degrees of air and soil temperature insulation, and shelter from wind. In cold-winter regions, these characteristics allow plants to be started earlier in the spring, and to survive longer into the fall and winter. They are most often used for growing seedlings that are later transplanted into open ground, and can also be a permanent home to cold-hardy vegetables grown for autumn and winter harvest.

Features & Benefits

100% Galvanized Steel

Rust and corrosion-proofing leaves no exposed raw steel and makes frames ultra durable

Assembly hardware included

All frames include corner braces and assembly hardware

Raise a wide variety of crops

Grow lettuces, parsley, salad onions, spinach, radishes, and turnips

Available in two frame styles

Choose from Round or Gothic to accommodate any greenhouse need

Grow in rotation

Grow a combination of crops so they mature in rotation

Start growing earlier

Grow crops ahead of their normal season in a cold frame

For orders or questions, call 1-800-932-9344 ext. 5423

Round Frame Size Chart

Width Diameter/Gauge Length (4 Rib Spacing) Length (6 Rib Spacing) Center Height* No. of Purlins*
24 ft. 48 ft. 72 ft. 96 ft. 24 ft. 48 ft. 72 ft. 96 ft.
12 ft. 2 dia / 16 ga 7 ft. 6 in. 1
14 ft. 138 dia / 14 ga 8 ft. 1
22 ft. 2 dia / 13 or 16 ga 11 ft. 3
28 ft. 2 dia / 13 or 16 ga 11 ft. 3
30 ft. 2 dia / 13 or 16 ga 11 ft. 3

* Center Height – are with 2′ anchor stakes. Longer stakes are available to increase sidewall and center height.
* No. of Purlins – additional purlins are available if extra roof support is needed.

Gothic Frame Size Chart

Width Diameter/Gauge Length (4 Rib Spacing) Length (6 Rib Spacing) Center Height* No. of Purlins*
24 ft. 48 ft. 72 ft. 96 ft. 24 ft. 48 ft. 72 ft. 96 ft.
14 ft. 138 dia / 14 ga 8 ft. 1
16 ft. 158 dia / 14 ga 8 ft. 6 in. 1
18 ft. 158 dia / 14 ga 11 ft. 1
22 ft. 2 dia / 13 or 16 ga 11 ft. 3
28 ft. 2 dia / 13 or 16 ga 13 ft. 3
30 ft. 2 dia / 13 or 16 ga 13 ft. 3

* Center Height – are with 2′ anchor stakes. Longer stakes are available to increase sidewall and center height.
* No. of Purlins – additional purlins are available if extra roof support is needed.