18ft (5.49m) Wide Polytunnel

Product ID: GH18

Is it time to scale up to commercial production? Are you expanding your efforts to grow your own? Increasing the size of your smallholding or small farm venture? An 18ft wide polytunnel could be just what you require to take your sowing and growing to the next level. The 18ft wide polytunnel is a good size for a commercial polytunnel, though it could also be a large domestic one. Whatever use you have in mind for your 18ft wide polytunnels, we are here to make sure you get exactly the right polytunnel for you.

Next, all you have to do is select the length of your tunnel and make choices about what exactly you require. Before making your purchase, you should also check out all the extras that could be purchased at the same time. Crop bars, sliding doors and staging, for example, can all help in a number of ways. Even better, when you add extras or accessories our bonus save deal means that you will make better and better savings on your polytunnel purchase! For your convenience, we’ve pre-selected timber base rails, our most popular option. They allow for quick and easy installation without the need to dig a trench. If you’d rather secure your cover using the traditional trenching method, simply deselect the timber rail option below.

From £2,033.00

Configure your polytunnel

Configure Your 18ft (5.49m) 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
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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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Rear
I Want To Design and Build My Own Doors
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Freebies
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Your 18ft (5.49m) Wide Polytunnel

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More About Our 18ft (5.49m) Wide Polytunnels

This is the most popular of our Commercial Polytunnels. It’s also one of the strongest Polytunnels around, thanks to 50.8mm diameter E370 high tensile pre-galvanised steel tubing with 6ft (1.83m) hoop spacing. It also has great design features, like the straight 3ft 3in (0.99m) sides that give really good clearance for a highly versatile growing area, and a good return on the economical floorspace.

Width 18ft (5.49m)
Hoop Spacing 6ft (1.83m)
Overall Height 8ft 6in (2.59m)
Straight Side 3ft 3in (0.99m)
Head Room (15cm from side) 5ft (1.52m)
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 28ft 7in (8.76m)
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 18ft (5.49m) 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.

18ft (5.49m) 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.