3" Trapezoidal

Structural & Environmental Performance


ML-300 3" Trapezoidal Panel

3" Trapezoidal panels can be factory formed and/or fabricated, for all substrates, at project locations. Utilizes concealed fasteners with a floating clip system.

Built to withstand the toughest conditions, our 3″ Trapezoidal standing seam panel is engineered for structural durability. Constructed from high-quality materials, this panel offers exceptional strength, ensuring stability and support for your building structure.

 Designed to fend off the elements, including rain, wind, and UV rays, this panel provides superior weather protection for your building. With its robust construction and tight seams, it forms a barrier against moisture infiltration, preventing damage and preserving the integrity of your structure. 

Engineered for durability and longevity, this panel offers years of reliable performance with minimal maintenance. Its durable finish resists fading, chalking, and corrosion, maintaining its aesthetic appeal for years to come. With our panel, you can enjoy peace of mind knowing that your building is built to last.

Unlike exposed fastener systems, our concealed fastening panel offers a sleek, streamlined appearance with no visible fasteners. This not only enhances the aesthetic appeal of your building but also provides added protection against water intrusion and potential damage. 

In addition to structural durability, weather protection, and longevity, our 3″ Trapezoidal Standing Seam Panel offers numerous other benefits:

  • Versatility: Suitable for a wide range of applications, including roofs, walls, and facades.
  • Energy Efficiency: Helps reduce energy costs by providing thermal insulation and reflective properties.
  • Sustainability: Made from recyclable materials and contributing to LEED certification credits.

Panel Features

Panel Features Include:

  • 24 gauge steel (standard)
  • 22 gauge steel (optional)
  • 26 gauge steel (optional)
  • Substrate Materials:
    • Galvalume (standard)
    • Galvanized (optional)
  • Colors available on standard, premium and metallic.
  • Rib Height: 3”

Testing & Performance

Panel Certifications Include:

  • UL Construction Numbers:TGKX.180C, TGKX.287, TGKX.308A, TGKX.539.
  • Uplift resistance of prepared roof-covering materials
    • UL 580 Class90.
  • Impact resistance of prepared roof-covering materials
    • UL2218 Class 4.
  • Fire tests of roof coverings
    • UL 790.
    • Class A, B, C. External fire exposure.
  • TDI Texas Approved
  • UL Certified

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Panel Details

Panel Profile
3 trapezoidal profile

3″ Trapezoidal is suitable for use on the following environments:

  • Extreme High Temperatures
  • Low Temperatures (Freeze/Thaw)
  • High Wind Environments
  • Hail Prone Regions
  • Fire Prone Regions

3″ Trapezoidal is suitable for use on the following building locations:

  • Roofing
  • Roof: 24″ Finished Coverage
  • 3″ Trapezoidal is not currently offered with variations differing from the original panel profile.

For custom panel designs, please contact a helpful team member

  • Standard Thickness: 24 gauge steel
  • Optional Thickness: 22 gauge steel*

*Longer lead times may apply

  • Concealed fastening system

3″ Trapezoidal is available for on-site roll-forming

  • Max Length, Texas: 53′ panels

Contact your helpful team member for max lengths in other states.

  • 3″ Rib Height

Minimum slope varies based on potential for ice & snow build up:

  • No risk of ice & snow: 0.25:12 w/ mastic
  • Potential risk of ice & snow: 0.5:12 w/ mastic
  • PVDF – 40 year
  • SMP – 40 year
  • Acrylic – 40 year
  • Bare Galvalume – 25 year

Panel Documentation

Specification Guide

Installation Guide

Looking for Additional Information?

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