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TUNNET - Heavyweight knitted polyethylene


Tunnet is a cover very similar to Mikroclima, but it is heavier and stronger, more suitable for covering tunnel houses and larger semi-permanent structures.

Knitted from transparent UV stabilised polyethylene thread, Tunnet is permeable to air and water, preventing overheating, excessive humidity and condensation - creating ideal growing conditions. Tunnet also gives extra protection from crop damage due to frost, hail, highwinds, birds and other pests.

Tunnet weighs 80grams/sqm, has a break strength of 450kg/m, has a covering of 98%, shading of 19% and typically gives frost protection of around 2-4 degrees.


Tunnet has been used with great success over a wide range of structures, from small individual shelters to protect shrubs or trees (avocados), cloches for vegetable growing, low lying hydroponics and watercress systems to large canopies covering vegetables, flowers and tropical fruit trees.

Tunnet cover can be used as a thermal blanket installed inside a glass or plastic house to defuse light, slow down heat loss and reduce condensation.

It does not loose its strength when wet or frostly and on smaller structures (such as avocado shelters) it strong enough that it can be stapled in place.

In conjunction with Fibreglass rods Tunnet  makes an ideal cloche over - the extra weight and strength can make this a good option instead of Mikroclima in exposed or high wind areas - particularly with the larger 4.1m rods.


Tunnet cover is used in the Maxi-Cloche system where a high degree of durability and the ability to retain tension is required.

TUNNET Knitted Polyethylene crop cover -  rolls of: 2m x 100m,  4m x 100m,  6m x 100m & 8m x 50m.

TUNNET  is also available in cut lengths 2m, 4m, 6m & 8m wide.

Smaller quantities of Tunnet can be ordered on our online shop -  Shop now!

Polynet Products Limited - for quality innovative crop protection products and unbeatable service.

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