9000 Series Double Hung Windows EnergyStar Partner

Features & Benefits

Energy Savings
  • Peak PerformanceTM Glass contains dual panes with Low-E, enhanced with argon gas and a warm-edge spacer system for exceptional thermal performance
  • Dual compression seals prevent air infiltration
  • Weather-Stripping virtually eliminates air and water infiltration
  • Fully interlocking sashes prevent air infiltration at meeting rail
  • Foam Inserts combined with dead air space chambers boost thermal properties
  • Dual Seals on Sill prevent air infiltration
Built to Last
  • Solid Vinyl Construction will not chip, peel or rot and never requires scraping or painting
  • Compression Fit Fusion-Welded Mainframe and Sashes for maximum strength and reduced air infiltration
  • Parallel I-Beam Construction provides increased strength, durability and structural integrity
  • Multi-Chambered Construction provides enhanced structural integrity
  • Integral Pocket Header provides clean interior appearance and prevents air infiltration
  • Sloped sill and dual drainage with weep system that significantly improves water drainage
Life Made Easier
  • Lifetime Warranty, Lifetime Insulating Glass Warranty, Lifetime Glass Breakage Warranty and Lifetime Screen Warranty for your peace of mind
  • Balance covers provide a clean, aesthetically pleasing appearance
  • Extruded vinyl lift rails for easy sash operation
  • Beveled screen track stiffens frame and enables easy screen removal
  • Dual night latches for ventilation
  • Dual Tech Locks offer the dual functionality of security as well as allowing the window to tilt in for easy cleaning by engaging the lock lever
  • Locking Fiberglass Half Screen is standard*
  • Locking Zinc Pivot Pins (Double Hung) prevent accidental sash removal while cleaning your windows

Energy Efficiency

The Series 9000 Window System protects your home and your wallet from rising heating and cooling bills with the Peak PerformanceTM Insulating Glass System. This advanced glass system features one lite of high performance Low-E Glass and one lite of clear glass, combined with insulating Argon gas and warm-edge technology, making your home a haven of optimum energy efficiency and comfort.

U-Factor comparison chart

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Air Infiltration

When it comes to air infiltration, less is more. The lower the CFM (cubic feet per minute), the less air the window lets pass through. This example shows how our windows compare to other windows and industry standards.

U-Factor comparison chart

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Fade Protection

Ultraviolet light inhibitors help prevent harmful UV rays from damaging and fading your furniture, drapes, carpets and hardwood floors.

U-Factor comparison chart

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Energy Efficient Glass Options

Thermal Windows & Doors is proud to manufacture vinyl replacement windows and doors with the ENERGY STAR® label. Every ENERGY STAR qualified window is independently certified by the National Fenestration Ratings Council, or NFRC, to perform at or above strict levels set by the U.S. Department of Energy. The rating gives you the tools needed to compare window performance.

Peak PerformanceTM Glass

Our Peak Performance Glass system is a dual-pane insulating glass system that combines one lite of high performance Low-E Glass and one lite of clear glass. The air space between the two is enhanced with Argon, an insulating gas. Consider the Peak Performance Glass system, which combines one lite of high-performance triple coat Low-E Glass and one lite of clear glass, for climates where solar control is important.

Peak PerformanceTM Ultra Glass

Peak Performance Ultra Glass combines triple glazing, Low-E Glass and Argon gas to offer a U-factor of 0.22, an insulating value that exceeds ENERGY STAR criteria.

Peak PerformanceTM Elite Glass

The addition of Krypton gas for optimal insulation gives our Peak Performance Elite Glass system an exceptional U-factor of 0.17, which far exceeds ENERGY STAR criteria and Department of Energy R-5 criteria (the lower the U-factor, the better a window insulates).

GreenSpec Listed

ENERGY STAR Climate Zone Map

Climate Zone map

Criteria for Windows

Climate Zone map

Standard Window Features

Dual Tech LockDual Tech Lock
Night LatchNight Latch
Locking Half ScreenLocking Half Screen

Vinyl Color Options*





BrownBrown Laminate

Exterior/White Interior

Painted Exterior Finish Options*

Custom color match is available

American ClayAmerican Clay
Safari BrownSafari Brown
Brick RedBrick Red

Wood Grain Interior Options*

Natural OakNatural Oak**

Paintable/Stainable and Standard with Earthtone Hardware

Honey OakHoney Oak***

Standard with Mocha Hardware

Caramel OakCaramel Oak***

Standard with Mocha Hardware

Grid Options

Choose from a variety of decorative grid patterns, styles and colors. All grids come between the glass for easy maintenance and a clean, modern look.

Grid options include:
  • 3/8″ square
  • 5/8″ flat
  • 5/8″ or 1″ contoured
square gridSquare
flat gridFlat
contoured gridContoured

Screen Options*

Fiberglass half screens come standard with double hung windows or choose from:

  • Half screen: In fiberglass, charcoal aluminum or Invisi-Screen®
  • Locking half screen: In fiberglass, charcoal aluminum or Invisi-Screen®
  • Full screen: In charcoal aluminum or Invisi-Screen®
Optional Full Invisi-Screen®

Full-frame screen for sharp, bright visibility with increased insect protection.

Invisi-Screen ComparisonCompare Invisi-Screen® visibility (left) with Conventional Screen (right)

Hardware Options

Brushed NickelBrushed Nickel

DreamGlas® Options

Dress up your windows with our gorgeous jewel cut, colored, and camed decorative glass patterns.







Crystal Border

Crystal Border

Crystal Facets

Crystal Facets

Gentle Blossom

Gentle Blossom


energy-star-partner-80We offer a variety of high-performance, insulating glass systems that qualify our products for the ENERGY STAR label.

Manufacturer reserves the right to substitute components as necessary.

*Screens are not meant to restrain a child from falling through an open window.

**Device screen may affect color shown. Please refer to actual window sample when selecting colors. The availability of dark color options can vary by region. Ask your sales representative for details.

***Brown Laminate Exterior is not available with Woodgrain Interior Finishes. Exterior may be painted if Brown color is desired. Additional charges apply.

****Earthtone lock comes standard.

*****Mocha lock comes standard.

******Standard on Honey and Caramel Oak. Not available on White and Earthtone.