20ft (6.1m) Wide Polytunnel

Product ID: GH20

A 20ft wide polytunnel could be the ideal solution for your growing needs—and if so, you’re in the right place. Our 20ft wide polytunnels can be made to any length, helping you maximise your commercial growing space and make the most of your resources. Simply choose the options you require below and you’ll be well on your way to creating the perfect polytunnel for your needs. For your convenience, timber base rails have been pre-selected. They’re our most popular choice, allowing for quick and straightforward installation without the need to dig a trench. If you prefer to secure your cover using the traditional trenching method, simply deselect the timber rail option below.

Looking for something beyond the basic package? Our Bonus Save Scheme makes it easy to customise your polytunnel while saving money. Add extras such as crop bars, base rails, sliding doors, or staging to your basket and enjoy fantastic savings on your overall purchase. Whatever your requirements, we can help you tailor your 20ft wide polytunnel to suit your exact needs.

Don’t delay—select everything you need today and get ready to make the most of your farm, market garden, smallholding, business premises, or community space. You’ll be surprised at just how easy, affordable, and efficient the whole process can be.

From £2,262.00

Configure your polytunnel

Configure Your 20ft (6.1m) Wide Polytunnel

  • Choose Your Specifications.
    Start by selecting the length and desired options for your custom build.
  • Need Guidance?
    Use the ‘HELP ME CHOOSE’ buttons for helpful details and recommendations.
  • The Bonus Save Meter: See exactly how much you’re saving!
    The BONUS SAVER METER fills up as you select options, rewarding larger orders with bigger discounts. The more you spend, the more you save!
  • Final Step:
    When complete, hit ‘ADD TO BASKET’ and head to the checkout!
Options Selector
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Types of Covers
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Anti Hotspot Tape
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Polytunnel Foundation
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Cover Fixing
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Belts & Braces
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Ventilation
Left
Right
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Useful Extras
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Irrigation
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Polytunnel Door Options
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Rear
I Want To Design and Build My Own Doors
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Freebies
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Your 20ft (6.1m) Wide Polytunnel

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More About Our 20ft (6.1m) Wide Polytunnels

Another big seller, the 20ft (6.1m) wide Polytunnel is absolutely perfect where ventilaton levels are critical. Because this Polytunnel is taller, the volume of air inside the structure increases making it ideal for cultivating certain taller plants and crops. The straight sides and gentle curves create access that is almost 6ft (1.83m) high giving you the ability to make the entire footprint productive.

Width 20ft (6.1m)
Hoop Spacing 6ft (1.83m)
Overall Height 9ft 4in (2.84m)
Straight Side 4ft 6in (1.37m)
Head Room (15cm from side) 5ft 10in (1.77m)
Hoop Diameter 2in (50.8mm)
Steel Specification E370 Galv High Tensile
Door Opening Width  From 6ft 10in (2.1m)
Door Opening Height 7ft (2.13m)
Distance over Hoop 32ft 5in (9.89m)
Door Frame 4in x 2in (100mm x 47mm)
Inner Door 3in x 2in (75mm x 47mm)
Base Rail 3in x 2in (75mm x 47mm)

How To Build A 20ft (6.1m) Wide Polytunnel

Downloadable Instructions Before You Buy

All of our Polytunnels come with a printed copy of the assembly instructions. However, we encourage you to visit our dedicated construction portal at construct.firsttunnels.co.uk before making a purchase. There, you’ll find comprehensive instructions and downloadable videos, ensuring you’re fully informed about the assembly process and what to expect from your Polytunnel.

Complete Build Videos

We’ve produced a series of in-depth videos that walk you through the entire construction process, from the basic setup to every available option. These videos are designed to guide you step-by-step, giving you a clear understanding of the time, effort, and craftsmanship involved in building one of our Polytunnels.

20ft (6.1m) Wide Polytunnel Reviews

Take A Look Around Our Polytunnels

Polytunnel Delivery Information

Delivery Map

Commercial Polytunnels will be despatched within 3-5 working days.

For Blue areas on the map delivery is FREE.

For Red and Orange areas on the map, please see the chart to determine your shipping charges.

Please note, the cost of delivery for customers in Eire includes a £50 customs clearance charge which we pay in advance on your behalf, ensuring there are no unexpected costs upon import.

Postcode Price
PO (Isle of Wight) £200
BT £200
EIRE £250
IM £190
JE £290
GY £290

For all other areas within Europe, please proceed to the checkout for a shipping quote. Should your country not be listed, please contact us for a shipping quote.

If you would like information about delivery of our other products, view our delivery page.