Large 20x30x10 FT & 20x20x10 FT Walk-In Metal Frame Tunnel Greenhouse for Gardening

Heavy-Duty Galvanized Steel Commercial Greenhouses (20 FT Width)

Ditch the flimsy aluminum backyard kits that collapse under the first heavy snow. These heavy-duty commercial tunnel greenhouses are engineered for serious agricultural operations and homesteaders who need reliable, year-round crop protection. Built with a rigid 15-gauge galvanized steel frame and massive 50.8 mm (2") truss arches, they provide the structural integrity required to survive high winds and harsh farm environments. The thick 12 mil ripstop leno mesh cover delivers 88% light transmission while diffusing intense rays to prevent leaf burn and maximize cash crop yields. Featuring a high 3.0 m (10 ft) peak ceiling for tall plants and easy equipment access, we stock these commercial-grade growing shelters at wholesale prices to ensure you get real value for the dollar on your farm infrastructure.

Key Features:

• Heavy-Duty Galvanized Frame: Constructed with massive 50.8 mm (2") 15-gauge steel truss arches and 25.4 mm (1") 19-gauge horizontal purlins to resist bending under wind and weather loads.
• 12 Mil Ripstop Cover: Features a commercial-grade leno mesh polyethylene tarp that is UV-coated, fully waterproof, and specifically designed to prevent tearing in rugged outdoor conditions.
• Optimal Light Diffusion: Engineered to deliver 88% light transmission with a 20% diffusion rate, ensuring your crops get maximum solar energy without harsh hot spots.
• High-Capacity Access: Includes a large 109.2 cm x 198.1 cm (43" x 78") walk-through door and a towering 3.0 m (10 ft) peak ceiling to accommodate tall plants and walk-behind tillers.
• Adjustable Climate Control: Built-in roll-up mesh side windows allow you to rapidly dump heat and manage internal humidity without letting pests inside.

Specifications:

• Truss Arches: 50.8 mm (2") 15-gauge galvanized steel
• Purlins: 25.4 mm (1") 19-gauge galvanized steel
• Bay Spacing: 149.9 cm (59")
• Cover Material: 12 mil ripstop leno mesh polyethylene
• Peak Height: 3.0 m (10 ft)

Available Models & SKUs:

Perfect For:

• Commercial cash crop production and large-scale seed starting
• Homesteaders needing a rugged, weather-resistant growing shelter
• Protecting sensitive plants and farm equipment from freezing rain and wind
• Anyone needing heavy-duty agricultural infrastructure at budget-friendly prices