Steeliner for exterior walls is a fiberglass composite panel designed for the exterior walls of the body truck, with a special acrylic gelcoat which enables a longer protection against UV radiation and provides an excellent esthetical appearance, thereby providing years of care-free service to your vehicle.


  • Lightweight
  • High impact and abrasion resistance
  • Moisture resistant
  • Rust & mildew resistant
  • Superior weathering properties
  • Easy to clean


  • Low maintenance cost
  • Trouble free service and long lifetime.
Recubrimientos plásticos para exteriores

Exterior FRP Liner Panel

Typical application

  • Exterior wall liner in dry and refrigerated trailers and truck bodies
  • Ambulances
  • Delivery trucks and many others

Product Range

  • AGC: smooth, standard liner panel with AgriGelCoat protection
  • AGC-WR: smooth liner panel with woven roving for better resistance

Physical Specification

Steelwall Exteriors
Thickness inch .050 .090
mm 1.25 2.3
Width inch from 35 to 102 from 35 to 102
mm from .90 to 2.59 from .90 to 2.59
Surface finish Smooth
Available in bulk coil, 250 to 500 linear feet as well as cut-to-length sheets.

Technical Characteristics

ASTM StandardTestUnit measureSteelwall Exteriors AgrigelcoatSteelwall Exteriors Agrigelcoat with WR
D-790 Flexural strength Psi 19×103 30×103
D-790 Flexural modulus Psi 6×105 9×105
D-638 Tensile strength Psi 12×103 28×103
D-638 Tensile modulus Psi 9×105 1.5×105
D-638 Elongation % 1.5 1.3
D-256 Impact resistance Ft-lb/in notched 6 11
D-696 Coefficient of linear expansion ln/in/ºF 1.7×105 1.6×105
D-2583 Hardness Barcol 40 40
D-177 Thermal conductivity factor Btu in/hr./ft2/ºF 0.45 0.45
D-570 Water absorption % 0.25 0.25
D-792 Specific gravity gr/cm3 1.53 1.61

Typical application


Aging Characteristics

Yellowing of Steeliner Exterior Panels vs. Competitor

Its special formulation and Agri Gel Coat protection provides high aesthetics combined with low level yellowing, extending significantly the lifetime of the truck body.

Other products of the family

Interior Walls and Roofs

Steeliner transportation interior wall & roof liner is a high strength fiberglass composite panel. It is tough, durable and USDA approved. Panels provide great impact and abrasion resistance, and are extremely resistant to moisture. Wall liner panels also protect against a wide range of chemicals and are rustproof and mildew resistant.

Translucent Roof

Steeliner semi translucent and translucent roofs are laminates designed to allow the light pass through the roof that provides a better sight inside the body truck (making loading and unloading operations much easier) and saving energy. Available with the Woven Roving Tissue reinforcement making the roof of the body truck scratch-resistant.


Steeliner sub-flooring is a fiberglass composite panel that is light yet strong. It is resistant to moisture and a wide variety of chemicals. It is designed not to rot, corrode or mildew. Designed for use in refrigerated trailers and truck bodies.

Scuff Panels

Truck Bed Panel

Embossed Truck Bed Panel are reinforced composite panels for exterior use including truck bed covers. These thermoset panels are produced using the highest quality polyester resins and U.V. inhibitors.