EC140 Awning Window

The EnergyCore 140 awning window from MI Windows and Doors combines traditional style with unparalleled energy efficiency and performance for any new construction or renovation and replacement project. The EC140 is an ENERGY STAR-qualified vinyl awning window in all four U.S. climate zones. The warm-edge spacer system and exterior perimeter weatherstripping maximize the energy efficiency and thermal performance of this awning window. The unique frame and sash design create clean, continuous lines and large viewing areas, while allowing fresh air into the home even on rainy days.

Energy Star ®


  • North-Central
  • Northern
  • South-Central
  • Southern
  • Warm-edge spacer system maximizes energy efficiency and improves seal performance of insulated glass units
  • Welded, multi-chambered frame and sash for superior strength and energy-efficiency
  • Dual-foam compression bulb seals for protection against wind, rain, dust, and noise
  • Exterior perimeter weatherstripping for enhanced thermal performance
Product Details:
  • 3-1/4" frame depth
  • 3/4" dual-pane insulated glass
  • 5 frame styles
    • 1-3/8" fin, 1-3/8" stucco fin, 1" fin, 1-7/8" flush fin, finless
Performance Ratings:
  • STC: 29-40
  • U-Value: 0.19-0.31
  • SHGC: 0.11-0.24
  • VLT: 0.22-0.44
Glass Options:
  • Tempered
  • Obscure
  • Laminated
  • Argon Gas Enhancement
  • LoE-340
  • LoE-366
  • i89 LoE

Color Options:
  • White (interior and exterior)
  • Adobe (interior and exterior)
  • Bronze  (exterior with white or adobe interior)
Grid Options:
  • 5/8" flat grids-between-the-glass
  • 15/16 " sculptured grids-between-the-glass
  • 5/8" simulated divided light
  • 15/16" simulated divided light
  • Color-matched
  • Oil-rubbed bronze
  • Brushed nickel

*Product availability varies by state and region. 
Consult your local building code for product approvals pertaining to your specific project.  Please contact MI for assistance.