wc-goodbetterbestVertical Sliding Windows

What is a double-hung window?

The double-hung window is a vertical sliding window that has two sashes that operate vertically for ventilation from either the top or bottom of the window unit. Both sashes tilt in for safe and easy cleaning from inside the home. Balancers counter the weight of the sashes to provide easy operation and to allow the sashes to remain open in any position.

What is a single-hung window?

The single-hung window is a vertical sliding window that has a fixed top sash and a bottom operating sash that operates vertically for ventilation. The bottom sash can be removed for cleaning. Balancers counter the weight of the operating sash to provide easy operation and to allow the sashes to remain open in any position.

Standard on all Window Source vertical sliding windows:

  • multi-chambered premium vinyl frames
  • fusion welded vinyl sash and main frames
  • double insulated glass IG units
  • warm edge spacer technology
  • stainless steel constant force balance system
  • available with optional stucco flanges
  • half screens
  • custom made to fit each opening
  • lifetime warranty

Our Entry Level 3000 Series Single-Hung Windows

You don’t have to sacrifice on quality if you’re working with a limited budget on your replacement window project. Our economical 3000 Series single-hung window line has all of the essential features of an energy efficient replacement window line including fusion welded frames on all sash and mainframe corner joints. Many other entry level windows have mechanically fastened joints that can work loose.

  • 2 5/8” deep master frame
  • Single hung fixed top sash
  • Removable side loaded bottom sash
  • Optional 1 7/8” single wall flush stucco fin
  • Single strength float glass
  • Available in white, clay or sand vinyl
  • extruded aluminum half screens
  • meets Energy Star when ordered with LowE glass

Our Most Popular 6000 Series Single-Hung Windows

Many homeowners upgrade to our popular 6000 Series double-hung window line. The 6000 series comes standard with more vinyl, more strength, and double strength glass. For just a few dollars more it is a great value.

  • 3 7/16” deep master frame
  • fusion-welded sashes and mainframes
  • Single hung fixed top sash
  • Removable side loaded bottom sash
  • Optional 2” dual wall flush stucco fin
  • Heavy duty contoured frame
  • Aluminum-reinforced meeting rail
  • Available in white, clay or sand vinyl
  • meets Energy Star when ordered with LowE glass

Our Highest Performance 9000 Series Triple-Pane Double-Hung Windows

The 9000 series is our highest performance window line. Triple glass and foam filled frames give you the ultimate in comfort and energy savings.

The triple glass package in the 9000 series features two coatings of high performance LowE and two chambers of Argon gas fill. The result is a highly efficient replacement window with an incredible NFRC U-factor of .22 with Energy Miser 2+ glass.

With the 9000 series you’ll be prepared for ever rising energy prices. We have seen similar products offered for more than twice as much. Why pay more?

9000 Series Features

  • multi-chambered 3 1/4 inch vinyl frames
  • Double-hung – top & bottom sashes tilt in for easy cleaning
  • Optional dual wall flush stucco fin
  • Available with double or triple glass
  • Insulating foam filled frames resist heat and cold transfer
  • Decorative recessed cam locks (two are standard in windows over 25” wide)
  • Equal sight lines for traditional aesthetics
  • NFRC U-Factor of .22 with optional Energy Miser 2 IS LowE/Argon triple glass
  • extra heavy duty beveled frames
  • DP-50 with optional fiberglass reinforced meeting rails and foam filled sash.
  • welded true slope sill
  • available in 4 interior colors and 4 exterior colors