12ft (3.66m) Wide Polytunnel

Product ID: GH12

A 12ft wide polytunnel will easily allow you to have one central bed and a further growing bed on each side – a layout that can really maximise the use of space while making it easy for the gardener to get around. If you are taking the next step on your journey towards a more sustainable way of life then a 12ft polytunnel could be perfect – big enough to grow a quantity of food but not so big that it becomes overwhelming in a domestic setting, on an allotment or in a community garden.

Click on ‘Help Me Choose’ to see what options you can choose with your 12ft wide polytunnel. Timber base rails have been pre-selected for your convenience, as they are our most popular option and allow for straightforward installation without the need for trenching. If you prefer the traditional trenching method, simply deselect the timber rail option below. Even better – the more extras you include, the more you can save with our fantastic bonus save offers. Just pop everything in your basket to find out how much you can save on your ideal 12ft wide polytunnel.

From £650.00

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Configure Your 12ft (3.66m) Wide Polytunnel

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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
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Right
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Useful Extras
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Irrigation
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Polytunnel Door Options
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I Want To Design and Build My Own Doors
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Freebies
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Your 12ft (3.66m) Wide Polytunnel

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More About Our 12ft (3.66m) Wide Polytunnels

The 12ft (3.66m) wide Polytunnel is another very popular Domestic option, ideal for the larger garden or allotment. On this width the straight sides give you ample room for staging, increasing your growing potential no end. Like all of our Domestic models, it comes with ‘real’ doors at each end, ensuring good air circulation.

Width 12ft (3.66m)
Hoop Spacing 5ft (1.53m)
Overall Height 7ft 7in (2.31m)
Straight Side 3ft 3in (0.99m)
Head Room (15cm from side) 4ft 8in (1.42m)
Hoop Diameter 1in (25.4mm) or 1½in (35mm)
Steel Specification E370 Galv High Tensile
Door Opening Width From 2ft 3in (0.69m)
Door Opening Height 6ft (1.83m)
Distance over Hoop 22ft 8in (6.90m)
Door Frame 3in x 2in (75mm x 47mm)
Inner Door 2in x 2in (50mm x 50mm)
Base Rail 3in x 2in (75mm x 47mm)

How To Build A 12ft (3.66m) 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.

12ft (3.66m) Wide Polytunnel Reviews

Take A Look Around Our Polytunnels

Polytunnel Delivery Information

Delivery Map

Domestic Polytunnels (including Fruit Cages & Mini Polytunnels) will be despatched within 1-3 working days.

For Blue and Red areas on the map delivery is FREE.

For 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
BT £60
EIRE £138
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.