12ft Wide Polytunnels

The 12ft First Tunnels polytunnel is ideal for larger gardens and will ensure a controlled growing environment to allow you to yield a better crop year after year. Whatever you do with your 12ft polytunnel, it’s important to get the construction right. Take a look at the PDF construction guides below for detailed step-by-step instructions, details on tools needed and any other details you’ll need to know. Scroll down and download the right 12ft construction guide for your polytunnel system, or get in touch with the construction team with any questions here.


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.