Quanex EnergyCore® System

Superior performance for low- to mid-rise construction



EnergyCore® is a patent-pending window system with AirCell™ Fusion Insulated Technology that blocks thermal conductivity six times better than fiberglass, four times better than rigid PVC and three times better than wood – for overall superior energy performance.

The system features tri-extruded frame profiles with an integrated, engineered insulating core that improves U-factors by 50 percent over thermally broken aluminum and 15 percent over hollow vinyl window frames.

EnergyCore®’s sash and frame components are designed to accommodate heavier, high-performance triple (1-1/8 inch) or dual (3/4 inch) insulating glass units.

SuperCapSR™ Durability

EnergyCore® windows are offered with optional patent-pending SuperCapSR™ exterior color coating designed to prevent profile distortion due to heat build-up caused by high outdoor temperatures and provide long-lasting, vibrant color.



  • Thermally superior design featuring fusion insulated  AirCell™ technology
  • Exceeds current ENERGY STAR® requirements
  • Optimized insulation placement for superior thermal performance
  • Dual- and triple-glazing systems with Duralite® and Super Spacer® warm edge spacer system improve energy savings
  • 100 percent recyclable
  • Fully weldable to enhance corner strength
  • Won’t contaminate fabrication weld plates
  • Bendable for design flexibility and specialty shapes
  • Single Hung
  • Tilt Single Hung
  • Tilt Double Hung
  • Horizontal Slider
  • Double Horizontal Slider
  • Picture Window
  • Casement
  • Awning