Delivery & Pickup
Free standard LTL freight. TMG Industrial Products and Stinger Attachments ship free to delivery addresses in the contiguous United States. No order minimum applies.
Fuel tanks, fuel trailers, loading ramps and bridge platforms follow the hotshot-delivery rule instead. Unloading, liftgate, limited-access, appointment and other accessorial services are not included.
Free local pickup — every item. By appointment at Cliffhouse Buildings, 706 N Main St, Gravois Mills, MO 65037. Place your order online, then schedule collection.
TMG-GH821 8′ x 20′ Greenhouse with Galvanized Steel Frame
Original price was: $2,995.00.$2,595.00Current price is: $2,595.00.
Extend your growing season and maximize your agricultural output with the TMG-GH821 Greenhouse Kit.
Designed for both dedicated backyard enthusiasts and commercial growers, this structure provides a robust, climate-controlled environment that thrives in various climates.
Featuring a high-quality galvanized steel frame and a specialized combination of thermal-retaining twin-wall polycarbonate roofing and crystal-clear solid wall panels, this greenhouse ensures your plants receive optimal light diffusion and protection from harsh weather conditions.
With approximately 160 square feet of interior space, it delivers a clean, modern, and professional-grade solution for consistent year-round growth.
Key Features
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Advanced Thermal Insulation: Equipped with 4mm twin-wall polycarbonate roof panels that effectively trap solar heat, maintaining a consistent temperature to support delicate seedlings and year-round plant health.
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UV-Protected Clarity: Features crystal-clear 2mm solid wall panels that allow for maximum natural light penetration while blocking harmful UV rays, eliminating the need for supplemental artificial lighting.
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Durable Structural Integrity: Built with a rust-resistant galvanized steel frame and reinforced ground base bars, ensuring long-term stability and performance in outdoor environments.
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Integrated Airflow Management: Includes manual roof vents that allow for precise regulation of internal temperature and humidity, preventing condensation buildup.
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Wide Accessibility: Features a spacious 44-inch bi-parting swing door, providing ample clearance for easy transport of tools, carts, and large plant containers.
Technical Specifications
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Model: TMG-GH821
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Available Sizes: 8’x10’, 8’x13’, 8’x20’ (this model), 8’x26’
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Exact Floor Footprint: 7-4/5’ W x 19-2/3’ L
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Vertical Dimensions:
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Sidewall Height: 69”
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Ridge Height: 97”
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Structural Spacing: 39” truss spacing
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Door Dimensions: 44” W x 78” H (Bi-parting swing door)
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Glazing Materials: 4mm Twin-wall polycarbonate (Roof) | 2mm Clear solid polycarbonate (Walls)
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Ventilation: 2 manual roof vents
Shipping & Delivery
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Processing Time: 2–3 business days
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Transit Time: 10–15 business days (subject to regional freight terminal parameters and site accessibility)
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Packaging Type: Wood crate shipping box
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Shipping Dimensions: 87” L x 45” W x 16” H
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Combined Shipping Weight: 635 lbs
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