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Makrolon® SL Sign Grade polycarbonate sheet, available in sheet and reel, is an enhanced UV resistant product with exceptional weatherability and superior impact strength. Available in clear and nine industry standard colors, and SL Matte, Makrolon® SL polycarbonate meets UL 879 for electrical signage. Makrolon® SL can be easily fabricated, thermoformed, and decorated, and has a proven track record of outstanding performance in any environment. With Makrolon® SL and Makrolon SL Matte polycarbonate sign grade products, you can be confident your company image is secure. Makrolon® SL Sign Grade sheet is a polycarbonate product with an advanced UV resistance technology that promotes long lasting outdoor weathering performance. It features outstanding impact strength, excellent dimensional stability, high temperature resistance, and high clarity. Makrolon® SL is offered in clear, a wide range of of standard sign colors, or can be custom matched to any color. This product, available in either sheet or reels, has a proven track record of outstanding performance in extreme environments and meets UL 879 standard for electric sign components. A ten (10) year limited product warranty is available for both clear and colors for breakage resistance. Clear sheet is also covered for weathering resistance.Makrolon® SL Brochure

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At a Glance

Generic Name

Available In
Sheet, Reel

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Technical Information

Stock Products Properties Applications Advantages

Stock Products

Sheet .118″ – .500″ 48” x 96” CTS Clear, Bronze, Gray, Green, Dark gray
Reel .118″ – .236″ 45″ – 100″ Clear

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density g/cm^3 D792 1.2
Mechanical PropertiesUnitsASTMResults
Tensile Strength @ yield psi D638 9500
Tensile Modulus MPa D638 340000
Tensile Elongation @Break % D638 110
Flexural Strength MPa 13500
Flexural Modulus psi 345000
Compressive Strength psi D695 12500
IZOD Impact Strength Notched kJ.m^2 D256 18
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion x10^-5/K C177 3.75
Heat Deflection Temp at 264 psi °F 270
Electrical PropertiesUnitsASTMResults
Surface Resistivity @60 Hz ohms/sq D257
Volume Resistivity, 50% RH ohm-cm D250 8.2
Optical PropertiesUnitsASTMResults
3mm Transparent Clear Transmittance. Total (%) % D1003
Refractive Index % D542 1.586


  • Flat and formed sign faces and channel letters


  • UV resistant
  • Weatherability
  • High impact strength
  • Superior dimensional stability
  • High clarity
  • Lightweight
  • Easy to fabricate
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