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

    WidthDiameter/GaugeLength (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 ga7 ft. 6 in.1
    14 ft.138 dia / 14 ga8 ft.1
    22 ft.2 dia / 13 or 16 ga11 ft.3
    28 ft.2 dia / 13 or 16 ga11 ft.3
    30 ft.2 dia / 13 or 16 ga11 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

    WidthDiameter/GaugeLength (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 ga8 ft.1
    16 ft.158 dia / 14 ga8 ft. 6 in.1
    18 ft.158 dia / 14 ga11 ft.1
    22 ft.2 dia / 13 or 16 ga11 ft.3
    28 ft.2 dia / 13 or 16 ga13 ft.3
    30 ft.2 dia / 13 or 16 ga13 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.