Double Extrusion

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Secure polythene or netting firmly in place with this double aluminium extrusion strip, designed for use with base rails in polytunnels. It holds both edges of your sheet tightly, ensuring a secure fit that’s weather-resistant and long-lasting. Easy to install, this extrusion provides a clean, professional finish on tunnel ends and sides. Read more

From £10.00

  • Free UK Delivery, Spend £100+
  • 6500+ Positive Reviews
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Double Extrusion
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double extrusion diagramSecure polythene or netting firmly in place with this double aluminium extrusion strip, designed for use with base rails in polytunnels. It holds both edges of your sheet tightly, ensuring a secure fit that’s weather-resistant and long-lasting. Easy to install, this extrusion provides a clean, professional finish on tunnel ends and sides. It’s designed to accept 200-micron polythene and shade netting, and is best used with our PVC Infill and Rail Joiners (supplied separately)  for optimal sealing and durability. Whether you’re building a new structure or upgrading an old one, this extrusion gives you added stability and protection against wind and water ingress. A great choice for any grower looking for a professional and practical finish to their tunnel setup. 

Attached to the framework with intermediate and corner clamps.

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Delivery Map

Polytunnel Accessories (including polytunnel covers) will be despatched within 1-3 working days.

Customers in the Blue and Red areas with an order value less then £100, shipping costs will be £4.95.

For orders above £100, delivery is FREE. For customers in the Orange areas, shipping costs will be £80 for Eire and £30 for Northern Ireland, Isle Of Man, Guernsey & Jersey irrespective of order value.

Please note, the cost of £80 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.

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.