18ft Wide Polytunnels

The 18ft First Tunnels polytunnel is spacious enough to improve out of season crop yield without taking up an enormous amount of space. The downloadable PDF guides below contain step-by-step comprehensive instructions on preparing for and constructing your 18ft polytunnel. They also contain handy QR codes that you can scan with your phone to access a huge library of video instructions. Download today and feel free to contact our construction team for assistance.


In order to view and print a PDF document, you will need to download the free PDF viewer from the Adobe website. Most computers come with the free Adobe Reader ® software as standard.

They're called QR codes, and we're using them to give you easy access to our construction videos...

Using the latest QR code* technology we have updated all our construction guides to give you instant access to all our construction videos.


No typing, no searching for the right video, just a simple scan (1) of the code with your smart phone and you’ll be instantly connected to that construction video (2). Perfect for when you’re outdoors and could do with the reassurance of seeing what you’ve got to do next.