High Tunnel Greenhouse

TunnelPro Plus

The TunnelPro Plus is an exceptional choice for growers seeking a high tunnel greenhouse that combines durability, efficiency, and adaptability. This economical high tunnel 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, 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 tunnel greenhouses are ideal for growing soft fruit, for open-field growers wishing to convert to controlled-environment agriculture.

Proper high tunnel ventilation for strawberries is essential to maintain an ideal growing environment, reducing humidity levels and preventing fungal diseases like botrytis. Our high tunnel greenhouses are designed with advanced ventilation systems, including roll-up sides and ridge vents, to optimize airflow while maintaining stable temperatures. This helps improve fruit quality, increase yields, and enhance plant health by minimizing stress from excess heat and moisture. Whether you’re growing strawberries for early-season production or extending your harvest, our ventilation solutions provide the control you need for consistent, high-quality crops.

From climate to crop sensitivity to market demands, we understand the complexities faced by production managers. High Tunnel Greenhouses are a cost-effective solution offering unique advantages to growers.

Suitable for

Made in Canada, shipped worldwide.

Local installation across Canada, USA, and Mexico.

Product Benefits

Key Features

High Tunnel Greenhouse

TunnelPro Plus

  • Available width: 31’6″ (9,5m)
  • Top Clearance: 18′ (5,5m)
  • Minimal Layout: 3 tunnels (bays)
  • Minimal Length: 50′
  • Foundations Options: Screw pile foundations (no concrete needed)
  • Covering Options: Single polyethylene films (6 & 7.2 mil)
  • Winter: Rolled polyethylene at the ridge for winter protection.

Steel Oval Tubing

All our structures are made with Galvalume steel, ensuring superior corrosion resistance and long-term durability.

Learn more

Harnois_Oval_Arch_B
16 Gauge

The TunnelPro Plus is an exceptional choice for growers seeking a high tunnel 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 Tunnel Greenhouse in North America

The rise of high tunnel 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 tunnel 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 Tunnel Greenhouse Projects

Industry
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Contact your local agent

Start your operation or expand with ease using a high tunnel greenhouse —contact us or request a quote today!