TunnelPro Plus - High Polytunnel Greenhouse
High polytunnel Greenhouse with curved walls
The TunnelPro Plus is a high polytunnel greenhouse with curved walls, offering excellent wind resistance, superior to that of straight-wall models. Its design allows for a minimum configuration of three tunnels, with the option to add a structural gutter, ensuring better structural integrity and increased stability. With an excellent quality-to-price ratio, the TunnelPro Plus represents a strategic investment, typically offering a return on investment in just three years.
Suitable for
- Strawberries
- Raspberries
- Blackberries
- Blueberries
- Leafy Green
- Fruits
Made in Canada, shipped worldwide.
Local installation across Canada, USA, and Mexico.
Benefits
- Extended growing season
- Better yield : Higher crop density
- Better product quality and predictability
- Harvesting speed up to 40% faster
- Quick installation
- Lower operating costs (labor and machinery)
- Reduced use of phytosanitary products
- Reduced risk of pests and diseases
- Reduced water consumption and fertilizer losses
Key Features
- Top Clearance for Better Climate Stability
- High Wind & Snow Load Resistance
- Optimized Ventilation for Superior Airflow
- Accessibility: Full access is available for tractors and workers.
- Options: Rain Gutters & Doors
TunnelPro Plus
- Width: 31’6″ (9,5m)
- Top Clearance: 18′ (5,5m)
- Minimal Layout: 3 tunnels
- Minimal Length: 50′
- Foundations Options: Screw pile foundations (no concrete needed)
- Covering Options: Polyethylene films (6 & 7.2 mil)
Steel Oval Tubing
All our structures are made with Galvalume steel, ensuring superior corrosion resistance and long-term durability.
Galvanized oval tube: 2'' x 3 9/16''
Our tubes are oval-shaped, preventing the polyethylene from coming into contact with sharp edges, which helps extend its lifespan.
Options
Full-width roll-up doors
Rainwater gutter
Tabletop growing system
Fertigation system
The TunnelPro Plus is an exceptional choice for growers seeking a high polytunnel greenhouse that combines durability, efficiency, and adaptability. This economical polytunnel is designed to optimize crop production while providing a cost-effective and reliable solution for diverse growing needs.
The TunnelPro Plus stands out with its robust frame (made in Canada), crafted from high-grade galvanized steel, ensuring exceptional strength and longevity. Its oval design minimizes stress on polyethylene films, extending their lifespan and reducing maintenance requirements.
Quick and easy to assemble, these high polytunnels are ideal for growing soft fruit, for open-field growers wishing to convert to controlled-environment agriculture.
From climate to crop sensitivity to market demands, we understand the complexities faced by production managers. High Polytunnels are a cost-effective solution offering unique advantages to growers.
Rise of the High Polytunnel Greenhouse in North America
The rise of high polytunnel greenhouses is transforming soft fruit production across North America, offering growers a reliable and cost-effective solution to extend the harvest window and improve crop quality. This innovative structure, now proudly available as the first Canadian-made model by Harnois, provides optimal climate control and protection from harsh weather, making it ideal for delicate crops like strawberries and raspberries. Producers such as Polyculture Plante and Entreprises Pitre are leading the way with successful installations, proving the model’s value in Quebec’s diverse climate. With increased consumer demand for locally grown berries and the need for sustainable farming methods, high polytunnel greenhouses are quickly becoming a key asset in the future of North American berry production.
They also allow earlier planting, reduce disease pressure from rain, and improve labour efficiency—giving growers a competitive edge in both yield and quality. Combined with integrated irrigation and fertigation systems, these structures support higher-density planting and consistent production from spring to fall.
High Polytunnel Greenhouse Projects
Contact your local agent
Start your operation or expand with ease using a high polytunnel greenhouse —contact us or request a quote today!