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Triple Wall Polycarbonate Panel
Triple Wall Polycarbonate Panel-side view
Item Number: SEG408

Triple Wall Polycarbonate Panel (4' X 8')

Lighter Than Glass

Regular price
In Stock
Sale price
Ships from Northern CA.
Shipping calculated at checkout.

Quantity must be 1 or more


The best coldframes and greenhouses are glazed with ribbed, triple wall polycarbonate.

This high-tech plastic (also used for airplane windshields and football helmets) is able to withstand extreme temperatures and high impacts.

Triple walled polycarbonate also has 40% more insulation value than single pane glass, with nearly equal translucence. The ribbing scatters light evenly, eliminating hot spots and promoting straight, uniform growth.

  • Dimensions: 4' W x 8' H x 5/16" thick
  • Rib spacing of the plastic that comprises the triple wall is 0.3125"
  • Transmits 75% of visible light and 1/16th the weight of a single pane of glass
  • U-factor is .528 R-factor is 1.89
  • Contains a UV barrier to increase the longevity of the sheets
  • Limited 10 year warranty
Note: Before removing the outer film covering on panels, check to see which side must be placed on the outside.



    Useful Information


    Ships via truck only. A crate is required to ship these via truck, and the charge will be added to your order ($50 per crate, which holds up to 8 panels).

    Requires a custom freight quote.

    Cannot be combined with other items in a package, due either to its size or manufacturer packaging.

    Shipping Weight: 13.0 lb

    Dimensions: 96.0"L x 48.0"W x 0.125"H


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