Green-tek ThermaGlas Twinwall Polycarbonate Sheet - 8mm - 71.25in x 9ft - Clear

Precision-Cut 8mm Twinwall Polycarbonate Panel, 71.25in x 9ft, UV-Stable and Condensate-Controlled

Trimming standard sheet stock to fit an odd bay width on site wastes material and risks an uneven cut edge that's harder to seal well. Green-Tek ThermaGlas Twinwall Polycarbonate Sheet solves that with panels precision-cut to 71.25in x 9ft, built on the same 8mm dual-wall cellular structure, UV-resistant outer layer, and condensate-control underside coating as standard ThermaGlas twinwall.

The result is a shatterproof, lightweight clear panel that drops straight into a matching bay span without on-site trimming, delivering the same long-service-life performance as full-sheet ThermaGlas for greenhouse glazing, cold frames, and covered growing structures.

Key Features & Benefits

• 8mm Twinwall Cellular Structure: Traps insulating air for meaningfully better thermal performance than single-layer polycarbonate or glass.
• UV-Resistant Outer Layer: Co-extruded protection blocks harmful UV radiation from degrading the panel or the crops beneath it.
• Condensate-Control Underside Coating: Spreads condensation into a thin runoff film instead of letting it drip onto plants.
• Shatterproof, Lightweight Construction: Far more impact-resistant than glass while reducing load on the greenhouse frame.
• Precision-Cut to 71.25in x 9ft: Fits standard commercial bay spans without on-site trimming or waste.

Who Should Use This

Commercial greenhouse builders and nursery operators glazing bays sized at 71.25in x 9ft are the direct fit for this precut panel, saving the trimming step and material waste that comes with cutting full sheet stock to size on site.

About Green-Tek, Inc.

ThermaGlas twinwall polycarbonate is manufactured by Palram Americas Inc.; Green-Tek, Inc., headquartered in Beloit, Wisconsin, serves as Palram's master distribution partner and converter, precision-cutting standard sheet stock to common bay widths and handling the warehousing and logistics that get this glazing to greenhouse builders.

Frequently Asked Questions

Which direction should the channels run during installation?

Twinwall polycarbonate should always be installed with the channels running vertically, from the ridge down to the eave. That lets condensation drain freely out the bottom instead of collecting inside the cells, where it can promote algae growth and reduce light transmission.

What accessories complete a precision-cut twinwall installation?

A complete installation needs Green-Tek Aluminum Tape to seal the top ridge edges, U-Profile or vent tape for the bottom eave edges, and H-Profile joining channels where adjacent sheets meet. Adding these accessories at the time of the glazing order keeps the whole installation on the same schedule.

Why order precision-cut sizes instead of a standard sheet I trim myself?

Precision-cut sizes fit common commercial bay spans exactly, eliminating on-site trimming, waste, and the risk of an uneven cut edge that's harder to seal well. That's especially useful on larger jobs with many identical bay widths.

When can this panel be trimmed further on site if needed?

It can be trimmed at any point during installation using a fine-tooth circular saw or a sharp utility knife guided by a straightedge. Keep the protective film in place while cutting and clear the channels of debris afterward.