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Polyethylene Convection Tubing

Polyethylene Convection Tubing

Our Greenhouse Poly Convection Tubes have long been used to provide improved air quality and HVAC control for greenhouses and livestock barns.

Available in either 4-mil or 6-mil thicknesses, this clear polyethylene is protected with a strong UV inhibitor. Our plastic is formulated for maximum light penetration and for durability in a greenhouse environment. Each tube is guaranteed to support the cubic-feet-per minute output of the fan for which it is designed. If there is a problem, the tubing will be replaced immediately.

A properly designed tube will make full use of the fan's output by distributing air effectively down the length of the greenhouse. If we know the length of the house and the diameter of the fan, we can custom design the tube.

Convection Tubing is available in diameters of 8", 10", 12", 16", 18", 20", 24", 30", and 36". 4-mil. rolls up to 1500ft and 6-mil. rolls up to 1000ft.

Punch position can be varied as shown below to provide the best possible air flow for each situation.

To order, select your MIL, diameter, and Punch Position preference then enter the installed length of each tube in the "Quantity" field below and hit "Add to Cart".  Repeat for each additional tube required.

For additional customization requests, including hole size and spacing, you may add a note to each tube at checkout, or simply reach out to our design staff at or by phone at 800-336-8882.

Custom-Cut products (including Convection Tubing) cannot be returned.  If you have questions regarding our Custom Tubing please reach out for assistance before ordering.

These products are backed by our performance guarantee.

To order multiple tubes, simply click "Add to Cart" for each tube needed. The shopping cart will automatically sum up the total footage, and will display your requested "Custom-Length" for review.



Punch Position

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Enter custom length in feet
Regular price $0.75 USD
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