Triple Pane

Are you looking for energy-efficient windows? Our 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, our Extreme Double-Hung Window 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 Extreme Double-Hung Replacement Windows apart. These advanced details go into every Extreme, making it the most stylish and hardest-working double-hung replacement window available today. Our Extreme Double-Hung Windows simply can’t be beaten.

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Energy Star ®


  • North-Central
  • Northern
  • South-Central
  • Southern
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  • 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
  • 3-1/4” frame depth
  • Triple-pane insulated glass
  • 4-9/16″ and 6-9/16″ wood extension jambs available
  • Finless frame
  • 3-1/4” frame depth
  • 3/4″ dual-pane or 7/8″ triple-pane insulated glass
  • 2-lite and 3-lite configurations available
  • 4-9/16″ and 6-9/16″ wood extension jambs available
  • Finless frame 
  • U-value: 0.21-0.23
  • SHGC: 0.21-0.23
  • VLT: 0.37-0.41
  • Low-E
  • High Performance Low-E
  • Argon Gas Enhancement
  • Tempered
  • Laminated
  • Obscure
  • 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)

Interior Colors:

  • White, almond, and clay* extrusion
  • Hillside oak, natural oak, and colonial cherry laminate
  • Black matte paint

Exterior Colors

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

*Available on product manufactured in Texas only

Color limitations may exist. Refer to product literature for more details.

  • Color-matched
  • Optional window operating control device (WOCD)