Tunnel type greenhouse EnviroPro

researchwith side ventilationwith steel framework

Product Overview
Engineered for commercial horticulture, the EnviroPro Single Span polytunnel is manufactured to BS EN 13031. The structure pairs MAGNAtube coated steel foundation tubes with an 80x40 mm flat-sided oval hoop profile and an integrated cover tensioning system to achieve a drum-tight polythene finish and reliable on-site re-tensioning.

Key Features

• Standard 80x40 mm flat-sided oval hoop profile for structural integrity
• Purpose-designed brackets and fittings manufactured in-house
• Configurable ventilation, doors, irrigation and climate control
• MAGNAtube steel foundation tubes, 2.5 mm wall thickness (no timber)
• Integrated cover tensioning system for drum-tight polythene finish
• Wind and snow load tested for exposed sites
• 50.8 mm ridge and main crop bar system for longitudinal stability

Options and Customisation

• Widths: 5 m, 6 m, 7 m, 8 m, 9 m; unlimited lengths in standard increments
• Cover options: diffused polythene, clear polythene, twin-skin for improved thermal performance
• Ventilation: manual or automatic roof vents, louvres and side ventilation options
• Access: sliding aluminium doors, bespoke gable and door-frame options
• Irrigation: overhead or dripline systems integrable with the structure
• Reinforcements and bracing packages for exposed sites

Technical Specifications (table)
Tunnel Width | 5m (16ft) | 6m (20ft) | 7m (23ft) | 8m (26ft) | 9m (30ft)
Height | 2945 mm | 3290 mm | 3380 mm | 3670 mm | 3920 mm
Hoop spacing | 2500 mm | 2500 mm | 2000 mm | 2000 mm | 2000 mm
Hoop diameter (flat sided oval) | 80x40 mm | 80x40 mm | 80x40 mm | 80x40 mm | 80x40 mm
Number of hoop pieces | 5 | 5 | 5 | 5 | 5
Number of struts per end | 12 | 12 | 12 | 12 | 12
Strut diameter | 31.8 mm | 31.8 mm | 31.8 mm | 31.8 mm x10, 50.8 mm x2 | 31.8 mm x10, 50.8 mm x2
Ridge bar diameter | 50.8 mm | 50.8 mm | 50.8 mm | 50.8 mm | 50.8 mm
Main crop bar diameter | 50.8 mm | 50.8 mm | 50.8 mm | 50.8 mm | 50.8 mm
Cover tensioning system? | Yes | Yes | Yes | Yes | Yes
Wind & snow loading? | Yes | Yes | Yes | Yes | Yes
Steel base rails | 49x57 mm | 49x57 mm | 49x57 mm | 49x57 mm | 49x57 mm
Steel end frames | 49x57 mm | 49x57 mm | 49x57 mm | 49x57 mm | 49x57 mm

Product Description
The EnviroPro Single Span is specified for commercial growers and research facilities. Each width uses the 80x40 mm flat-sided oval hoop to simplify assembly and improve load distribution. MAGNAtube zinc-aluminium-magnesium coating provides enhanced corrosion resistance compared with standard galvanised finishes. The system is compatible with EnviroPro side ventilation, door, crop bar and irrigation components.

Technical specifications

• Model: EnviroPro Single Span
• Hoop profile: 80x40 mm flat-sided oval tubing
• Foundation tubes: MAGNAtube coated steel, 2.5 mm wall thickness
• Ridge and crop bars: 50.8 mm diameter
• Struts: standard 31.8 mm (50.8 mm struts used in wider configurations)
• Base rails and end frames: 49x57 mm steel
• Hoop spacing: 2000–2500 mm depending on width
• Cover tensioning: integrated collar/hoop sleeve system for on-site re-tensioning
• Available widths: 5 m, 6 m, 7 m, 8 m, 9 m; configurable lengths
• Cover options: diffused polythene, clear polythene, twin-skin
• Corrosion protection: MAGNAtube zinc-aluminium-magnesium coating
• Design standard: manufactured to BS EN 13031