31' 6'' multi-tunnel greenhouses
TunnelPro Plus
Suitable for
Options
Galvalume Galganization (40+ years)
Roll-Up Doors
Elevated Growing Benches
Side ventilation with roll-up
Rainwater Gutter
Ferti-Irrigation
Arch Oval Tube Dimensions (50 ksi)
Screw Piles Dimensions
Width: 2'' x 2'' (14 ga)
Length: 9' 10''
Key Benefits
- Extended growing season
- Better yield : Higher crop density
- Better product quality and predictability
- Harvesting speed up to 40% faster
- Full access is available for tractors and workers.
- Lower operating costs (labor and machinery)
- Reduced use of phytosanitary products
- Reduced water consumption and fertilizer losses
Case Study: Entreprises Pitre
Transitioning from Open-Field to High-Tunnel Production, Innovative Strategies for Small Fruit Growers
Switching from open-field to high-tunnel production transformed our operation. With 15 hectares of TunnelPro Plus structures, we’ve gained better crop quality, extended our season, and reduced our operating costs by 50% compared to open-field. It’s a game-changer for small fruit production.
About the TunnelPro Plus
The TunnelPro Plus is a durable, economical 3-season high polytunnel greenhouse designed to boost yields and reduce production risks. Built in Canada with high-grade galvanized steel, its exclusive oval 2″ × 3 9/16″ arches offer exceptional strength, long-term corrosion resistance, and reduced stress on polyethylene films, extending cover lifespan and lowering maintenance.
Quick to assemble with concrete-free anchors, wide arch spacing, and optional twinning with or without structural gutters, the TunnelPro Plus provides a stable, adaptable solution for growers transitioning from open-field to controlled-environment production. Its 31′ 6″ width and up to 18′ height ensure easy machinery access and maximum usable growing space.
Ideal for small fruits, leafy greens, and vegetables, this multi-tunnel system delivers superior crop protection, excellent light diffusion, and reliable weather resistance. Fully compliant with Canadian and U.S. building codes and engineered to withstand high winds, it offers outstanding value, with a typical ROI in just 3 years, making it a wise long-term investment for protecting sensitive crops like strawberries and raspberries.
- Cold frame: Three-season greenhouses: The polyethylene film must be rolled up at the ridge during winter in areas where snow exceeds 3 inches.
- Minimum configuration: 3 tunnels
- Quality and processes ISO 9001-2015
Turnkey offer: Greenhouse + Irrigation
A high tunnel greenhouse solution paired with perfectly adapted irrigation systems for each block, designed for areas starting at 1/2 hectare, featuring TunnelPro Plus models measuring 31’6” x 230’:
Dosatron
7-tunnels block = 50 715 ft² (1/2 ha)
14-tunnels block = 101 430 ft² (1 ha)
21-tunnels block= 152 145 ft² (1,4 ha)
28-tunnels block= 202 860 ft² (1,9 ha)
Direct inject and controller
2 blocks of 28 tunnels = 405 720 ft² (3,8 ha)
5 blocks of 28 tunnels = 1 014 300 ft² (9,4 ha)
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 Production Lareault, 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.
Contact your local agent
Start your operation or expand with ease using a high polytunnel greenhouse. Contact us or request a quote today!