1650 Extreme Double-Hung Window

Are you looking for energy-efficient windows? The 1650 Extreme Double-Hung Window combines superior styling and handcrafted quality with exceptional long-term performance. Featuring triple-pane glass sandwiched around two warm-edge spacers, the 1650 Extreme is our most energy-efficient replacement window.  

Features like aesthetically beveled sashes and eight distinctive exterior color options complement advanced engineering details such as reinforced meeting rails and an optional foam-filled mainframe to set our 1650 Extreme double-hung replacement windows apart. These advanced details go into every 1650 Extreme, making it the most stylish and hardest-working double-hung replacement window available today. Extreme double-hung windows from MI simply can't be beaten. 

Energy Star ®


  • North-Central
  • Northern
  • South-Central
  • Southern

Features & Benefits:

  • Warm-edge spacer system maximizes energy efficiency and improves seal performance of insulated glass units
  • Triple-pane insulted glass provides optimal energy efficiency without compromising visibility
  • Interlocking sashes help reduce air infiltration
  • Metal-reinforced meeting rail delivers superior strength and durability
  • Constant-force balance system with detent clip helps prevent sash from drifting
Product Details:
  • 3-1/4” frame depth
  • Triple-pane insulated glass
  • 4-9/16" and 6-9/16" wood extension jambs available
  • Finless frame

Performance Rating:

  • U-value: 0.21-0.23
  • SHGC: 0.21-0.23
  • VLT: 0.37-0.41

Glass Options:

  • Low-E
  • High Performance Low-E
  • Argon Gas Enhancement
  • Tempered
  • Laminated
  • Obscure

Interior Colors

  • White, almond, and clay extrusion
  • Hillside oak, natural oak, and colonial cherry laminate (not available with nailfin)
  • Black matte paint

 Exterior Colors

  • White, almond, and clay extrusion
  • Almond, black matte, bronze, clay, cocoa, cream, forest green, and silver paint

View Color Options Data Sheet

Grid Options:

  • 5/8” flat grids-between-the-glass
  • 7/8” flat grids-between-the-glass (Eastern Region only)
  • 11/16” sculptured grids-between-the-glass
  • 15/16" sculptured grids-between-the-glass (Eastern Region only)
  • 1” simulated divided light (Eastern Region only)
  • 1-1/8" simulated divided light (Southern Region only)
  • Color-matched
  • Optional window operating control device (WOCD)

*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.