Extren™ is a Strongwell product of reinforced fiberglass mixed with either a thermosetting polyester or vinyl ester resin. Extren™ is produced in over 100 standard shapes and is corrosion and UV resistant.

  • Corrosion Resistant
  • Low Conductivity- Thermal & Electrical
  • Non-Magnetic- Electromagnetic Transparency
  • Lightweight
  • High Strength
  • Dimensional Stability
  • Low Maintenance
  • Series 500- All-purpose grade made with an isophthalic polyester resin and a UV inhibitor. The Shapes are Olive Green.
  • Series 525- All-purpose grade made from a fire retardant isophthalic polyester resin and a UV inhibitor. Extren 525 comes in Slate Gray while certain handrail and ladder components come in yellow.
  • Series 625- This premium grade is fire retardant and highly corrosion resistant from the utilization of a vinyl ester resin system with a UV inhibitor. The shapes come in Beige.
  • Available in a variety of sheet, rod, tube, channels, I-beams, angles, etc.
  • Custom fabrication services available from WS Hampshire.
Unit of Measure


Size (Width x Thickness)

N/A 3.000 x 0.250 in

Working Decimal Equivalent

N/A 3.00 x 0.25 in76.2 x 6.35 mm


N/A 3.000 in


N/A 0.250 in

Stock Size

N/A 20 ft6096 mm

Mill Run

N/A 800 ft

Weight per Lineal Feet

N/A 2.20 lbs55.88 kg


N/A Square Tube

Grade Description


    High tensile strength, corrosion resistant, non-conductive.