6mm Twinwall Polycarbonate Sheet

$65.60 - $103.20

A versatile, energy-efficient polycarbonate panel popular for greenhouse coverings, patio roofs, and more. Available in Clear, Opal, and Bronze to suit different applications and light transmission needs. Available in three convenient sizes with options for additional sizes by request.

Color: Clear
Size: 4ft x 8ft
Regular price $65.60
Regular price Sale price $65.60
Availability: 37 in stock
SKU: B1274-4x8
Collections:
Regular price $65.60
Regular price Sale price $65.60

The 6mm (¼ inch) Twinwall Polycarbonate Sheet is a top choice for greenhouse coverings and pergolas, combining durability with impressive insulation benefits. Twinwall panels are designed with air channels that provide up to 50% energy savings compared to single-layer coverings. This innovative structure helps keep plants warmer, reducing heating costs during cooler months.

Each panel is lightweight yet rigid, making it easy to install and handle. Whether you're constructing a new greenhouse, upgrading existing glazing, or adding a stylish roof to a patio, these panels fit seamlessly with most aluminum and glass structures using standard glazing clips or bar caps.

Choose among three shades for different effects:

  • Clear: Provides high light transmission and clarity.
  • Opal: Creates diffused, glare-reducing light, perfect for roof applications, especially in high-sun areas (such as the southern USA or high elevations).
  • Bronze: Perfect for an attractive, shaded effect that provides added privacy and reduced glare.

Heat Savings: The Twinwall design with internal channels traps air, providing an insulating layer that helps maintain stable temperatures and reduces heating costs.

UV Protection: All colors are UV-protected on one side to resist yellowing and damage from prolonged sun exposure. 

Condensation Reduction: Opal and Bronze options reduce condensation build-up, ideal for high-humidity areas like greenhouses and covered patios.

Specifications

Thickness: 6mm (¼ inch)
Size: 4ft x 8ft, 4ft x 10ft, 4ft x 12ft 
Custom Sizes Available: Widths up to 6 ft, Lengths 2ft - 24 ft
Colors: Clear, Opal, Bronze
R-Value: 1.6
Light Transmission: Clear 80%, Opal 57%, Bronze 42%
Material: Polycarbonate

Dimensions may vary by +/- 1/8".

Installation Tips:

  • Install panels with the flutes (channels) running vertically to maximize strength. End caps or vented tape are recommended to allow moisture to escape while protecting against condensation.
  • One side of the polycarbonate sheet has a UV-resistant coating. The printed or Blue side is the UV-resistant side. Be sure to install sheet with this side facing the sun to receive benefits and keep panel from yellowing.

Shipping Method: Motor freight

Delivery Estimate: Please allow 2–3 weeks

Contact us for custom sizes or a freight quote at 888-977-7659 or via quote request.

  • 30-day satisfaction guarantee

  • 10-year warranty on material defects

  • Fast & reliable shipping across the USA

  • Knowledgeable product support