Greenhouse with plants on a sunny day with trees and blue sky in the background
greenhouse double doors opeing on the side near vegi patch with a blue and white sky
Metal frame structure with reinforcement text and a drill in use.
Reinforced steel frame with a person using a hammer, set against a scenic background.
Two Polytunnel Pro Kits with doors and winding walls
Polytunnel Pro Kit with shade cloth surrounding
polytunnel frame being installed

Polytunnel Pro Kit

$4,990.00

Size: 4m x 8m

Size: 4m x 8m
4m x 8m
4m x 10m
4m x 12m
4m x 14m
4m x 16m
4m x 18m
4m x 20m
4m x 22m
4m x 24m
4m x 26m
4m x 30m
4.9m x 8m
4.9m x 10m
4.9m x 12m
4.9m x 14m
4.9m x 16m
4.9m x 18m
4.9m x 20m
4.9m x 22m
4.9m x 24m
4.9m x 26m
4.9m x 30m
5.8m x 8m
5.8m x 10m
5.8m x 12m
5.8m x 14m
5.8m x 16m
5.8m x 18m
5.8m x 20m
5.8m x 22m
5.8m x 24m
5.8m x 26m
5.8m x 30m

Shade Cloth: No Shade Cloth

Shade Cloth: No Shade Cloth
No Shade Cloth
With Shade Cloth

visamasteramerican expressapple paygoogle payafterpay
SKU: GH-PR-4X8-KIT
Availability: In Stock Pre order Out of stock
Shipping Weight: 409.0 kg
Description

Commercial Polytunnel Greenhouse (The Pro Kit) - 130km/h Reinforced Frame - for Commercial Growers & Exposed Locations

 

When your livelihood depends on the performance of your structure, there is no room for compromise. The Pro Polytunnel is our commercial-grade workhorse, engineered from the ground up for demanding conditions and larger-scale operations. We've significantly reinforced the entire frame with closer arch spacing and extensive steel bracing, creating a structure designed to stand firm in challenging weather and protect your valuable investment year after year.

 


Best For Commercial enterprises, growers in exposed locations, and anyone who demands exceptional structural integrity and larger-size formats for their operation.

Key Features

  • ✔ Heavily Reinforced Frame: Features closer arch spacing (1.32m), stronger end-wall supports, and 8 support brackets, all working together to create a structure of superior rigidity and strength.

  • ✔ Ultimate Wall Reinforcement: Includes two full rows of steel 'Top Hat' channels, providing immense strength against lateral wind loads from severe storms.

  • ✔ 130 km/h Severe Wind Rating: Professionally engineered to withstand powerful, 130 km/h storm-force winds, making it the ideal choice for exposed, high-wind, or coastal locations.

  • ✔ Premium 5-Piece Cover: Features Australia's toughest 250-micron EVA film (Anti-UV, Anti-Drip, Anti-Fog) in a multi-piece design, which allows for easier installation and maintenance on large structures.

  • ✔ Expanded Size Options: Available in lengths up to 35 metres to accommodate serious, large-scale growing operations.

  • ✔ High Roof Load Capacity: Rated for a 30kg/m² roof weight, easily handling maintenance loads or supporting trellised crops (e.g., tomatoes, cucumbers).

  • ✔ Includes Protection Felt Tape: Comes with anti-friction felt tape to protect your cover from wear and tear against the steel frame, extending its lifespan.

Sizes Available

  • This kit is available in our largest range of sizes, up to 35m long. Please select your required length and width from the dropdown menu above.

Specifications

  • Frame: 32mm Hot-Dip Galvanised Steel

  • Strong Footings: 42 mm Hot-Dip Galvanised Steel

  • Reinforcement: 1.32m Arch Spacing, 8 Support Brackets, 2x Rows 'Top Hat' Steel Bracing

  • Cover: 250-micron Premium EVA Greenhouse Film (5-Piece Design)

  • Cover Treatments: Anti-UV, Anti-Drip, Anti-Fog, High Diffusion, Chemical Resistant

  • Wind Rating: 130 km/h

  • Roof Load Rating: 30kg/m²

  • Wall Height: 1.5m - 1.8m (Varies by kit size)

  • Apex Height: 2.8m - 3.45m (Varies by kit size)

  • See full product specifications here

Ideal For (Uses)

  • Commercial market gardens and nurseries that cannot risk structural failure.

  • Exposed or remote properties that face high-wind and severe storm conditions.

  • Large-scale operations require long, uninterrupted growing tunnels.

  • Growers who need to hang lighting or trellis heavy crops from the roof structure.

Need a Hand?

  • This kit is designed for DIY installation. You can view our clear Step-by-Step Installation Guide and video tutorials to help you build.

  • We also offer a full range of Australia-wide services, including professional installation, repairs, and full custom designs. Please contact our team for a consultation.

Watch & Learn - Install Your Polytunnel

Step-by-Step Polytunnel Installation Guide

Need a hand or custom modifications? We offer Australia-wide:

See the full technical specifications list for more detailed product information.

Got more questions? See our FAQs for detailed answers on setup, materials, and product care.

Additional Information
Size

4m x 8m, 4m x 10m, 4m x 12m, 4m x 14m, 4m x 16m, 4m x 18m, 4m x 20m, 4m x 22m, 4m x 24m, 4m x 26m, 4m x 30m, 4.9m x 8m, 4.9m x 10m, 4.9m x 12m, 4.9m x 14m, 4.9m x 16m, 4.9m x 18m, 4.9m x 20m, 4.9m x 22m, 4.9m x 24m, 4.9m x 26m, 4.9m x 30m, 5.8m x 8m, 5.8m x 10m, 5.8m x 12m, 5.8m x 14m, 5.8m x 16m, 5.8m x 18m, 5.8m x 20m, 5.8m x 22m, 5.8m x 24m, 5.8m x 26m, 5.8m x 30m

Shade Cloth

No Shade Cloth, With Shade Cloth

Oversize Item Delivery

Oversized Item Delivery Options

Since oversized items require special handling, we may need to provide a custom freight quote for your order and will contact you with an updated shipping rate.

Available options include:

✔ Delivery to your closest depot for pickup - default method
✔ Direct delivery - requires forklift on site
✔ Direct delivery with tailgate lift truck (extra fees apply)
✔ Forklift loading at our warehouse (no extra charge if you arrange your own freight)
✔ Direct truck delivery (available in Victoria)

Important Notes:

  • Shipping costs vary by location and method
  • Because of the forklift requirement, delivery to the nearest depot is the default option and will be the method used unless you contact us to request otherwise.

Business Delivery:

  • Business delivery is available for commercial customers only
  • If you select business delivery and your products are bulky, it is your responsibility to ensure you have appropriate equipment (including forklifts) to unload products from the delivery truck
  • If you select business delivery and you are not a business, you risk your product not being delivered and may incur additional fees to retrieve your order
  • Business delivery customers must provide a valid business address and contact information
  • Additional fees may apply for failed delivery attempts due to lack of appropriate unloading equipment

Let us know your preference, and we'll arrange the best solution for you!

The Greenhouse, Perfected.

Still Unsure?

Book an appointment with one of our team members. We are here to assist you every step of the way.