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4mm Clear Twinwall Polycarbonate



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4mm Twin Wall Polycarbonate Sheet

Our 4mm Twin Wall Greenhouse Polycarbonate is lightweight with high light transmission. Low-cost, it is easy to maintain and suitable for a huge range of outdoor applications. It is weatherproof and provides UV protection. This product is manufactured from the highest quality materials and boasts outstanding structural properties for use as safety glazing in garden projects.

Only pay for what you need, click this link - 4mm Cut To Size Polycarbonate

This product is both impact resistant and insulating. We supply this polycarbonate product with a 10 year limited warranty from the manufacturer.

Available Sizes

We stock 4mm Twin Wall Greenhouse Polycarbonate in the following sizes:


700mm, 1050mm, 2100mm


2000mm, 2500mm, 3000mm, 3500mm, 4000mm, 4500mm, 5000mm, 6500mm, 7000mm

Product Specifications

  • Fire resistance: self-extinguishing
  • Light transmission up to 82 per cent
  • Service Temperature Range from -40 to +120C
  • HDT - 135C
  • Thermal Expansion - 2.5 mm/m for
  • Refractive Index - 1.59


We recommend this product as an alternative to glass in greenhouse structures, sheds, playhouses, summerhouses and indoor swimming pools.

Buy 4mm Twin Wall Greenhouse Polycarbonate Online

Order you 4mm Twin Wall Polycarbonate online here. We dispatch and deliver orders to any address nationwide in 1 to 3 working days.