The LIGHTWALL 3440 is our most popular product. This polycarbonate wall panel system offers beauty, durability, and economy with vertical panels that can extend up to 54 feet long and eliminate leak-prone horizontal joints.
Translucent polycarbonate wall panels offer a host of benefits including energy savings via daylighting, outstanding insulating value, and elimination of leak-prone horizontal joints. LEED credits are also available for 100% recyclable polycarbonate and aluminum framing. The LIGHTWALL 3440 has provided façade solutions for a wide range of structures in a wide range of industries, and has been subjected to a complete battery of air, water, and structural testing to ensure it offers superior insulation, durability, and weather-tight performance. 
Polycarbonate Wall Panels - EXTECH's LIGHTWALL 3440 at Logan International Airport

Further benefits and details

  • Structural cellular polycarbonate panels are 500mm (19-11/16”) wide
  • Vertical panels up to 54 feet long eliminate leak-prone horizontal joints
  • Comfortable, diffused daylighting
  • Highly insulating, up to a U-0.25 (R-4) for 40mm thick panels
  • Tongue and Groove joinery provides clean appearance without the need for vertical framing
  • High-impact resistance
  • Light weight panels install quickly for reduced installation cost
  • Framing systems for new construction and retrofit work
  • LEED credits available for 100% recyclable polycarbonate and aluminum framing
  • Low friction gaskets for long life
  • Complete air/water/structural testing
  • Available in various colors and translucencies
  • Available in ASTM E-84 Class A, CC-1 fire rated material
  • Manufactured in the U.S.A.


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Case Study: Boston Logan International Airport Hangars

daylighting translucent walls
A Speedy and Modern Retrofit with EXTECH’s LIGHTWALL 3440
Project: Boston Logan International Airport Hangars

Location: Boston, MA

Architect: Fennick McCredit Architecture

System: LIGHTWALL 3440

The Massachusetts Port Authority needed to renovate two maintenance hangars at Boston’s Logan International Airport. Originally constructed with metal panel walls and steel-sash glass windows, the New England winters and harsh aviation environment had taken a brutal toll on the buildings. The project called for glazing materials that could withstand the location while delivering good thermal performance, optimal daylighting, and long-term savings on energy costs.  It also demanded a speedy installation so flight schedules were impacted as little as possible Read more






LIGHTWALL 3440 Drawings 781.90 KB



Flammability Testing

  • Self-ignition: ASTMD-1929
  • Smoke Density: ASTM D-2843
  • Burn Extent: ASTM D-635
  • Interior Flame Spread: ASTM E-84


  • Color Change: ASTM D-2244
  • Yellowing Index: ASTM D-1925
  • Light Transmission: ASTM D-1003


  • Air Filtration: ASTM E-283
  • Water Infiltration: ASTM E-331
  • Load Bearing Capability: E-330
  • U-Value: ASTM C-518



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