EnergyQuest™ Windows


The EnergyQuest™ system is designed to maximize energy efficiency and durability. Its specially engineered isolated frame reinforcement and innovative weather strip application reduce air infiltration while improving overall thermal performance. EnergyQuest is foam-fill capable and can meet DP-50 residential structural ratings.

A smaller frame cross section also allows for pleasing aesthetics with a larger glazing area – without loss of performance. Geared toward both new construction and replacement markets, EnergyQuest vinyl windows help OEMs meet and exceed ENERGY STAR® 6.0 criteria at a competitive price point.

EnergyQuest is designed to accommodate either double- or triple-glazed insulating glass (IG) units, up to 1-1/8 inch overall thickness.


  • 3-1/4 inch frame depth is optimal for new construction and replacement applications
  • Block frame, or with integral nail fin at both 1” and 1-3/8” setbacks
  • Glazing unit capacity up to 1-1/8” thick; exterior glazed
  • Dual- and triple-glazing systems with Duralite® and Super Spacer® warm edge spacer system improve energy savings
  • Integral frame accessory channels accept extensive interior/exterior frame accessory options
  • DP-50 Residential structural rating capable
  • Foam-fill capable – thermal modeling optimized for maximum U-Factor performance
  • Smaller frame cross-section maximizes glazing area without loss of performance
  • Exceeds current ENERGY STAR® requirements

  • Single Hung
  • Tilt Single Hung / Sloped Sill
  • Tilt Double Hung / Sloped Sill
  • Horizontal Slider
  • Double Horizontal Slider
  • Picture Window
  • Casement
  • Awning