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Window shown with optional sash reinforcement for high wind zone applications. The reinforcement used and placement of reinforcements will depend on the window test grade required.

Westbilt II Thermal Performance Data >>

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Glass so smart, it can control the comfort of your home...

LoĒ²-270 - Glass

LoĒ²-240 - Glass

LoĒ²-366 - Glass

Westbilt II Pro Series™ - Single Hung Vinyl Windows

Builder Friendly Windows...

    Westbilt Pro Series™ Standard Features:

  • 3/4" Insulated Glass.
  • Built-in brickmold profile J-channel with extruded 13/4" nail fin for efficient new construction installation. Replacement style frame is also available. Frame depth is 25/8".
  • 3/4" Clear Insulated Glass is standard with numerous glazing options available, such as our high-performance Low-E2 with argon gas.
  • Optional vinyl interior frame extensions for 49/16" and 69/16" wall depths reduce job-site labor expense. Clip for wood interior frame extesions and receivers for sheetrock are also available.
  • Continuous head and sill twin window is available as well as mullions for combination windows.
  • Matching slider window, picture window, and architectural shapes for complete design flexibility.
  • Fully welded frame and sash with sloped sill (single hung) and interlocking meeting rail for strength and durability.

More Standard Features:

  • Bottom sash tilts in for easy cleaning.
  • Operable sash is fully weatherstripped with two rows of high density center fin pile weatherstripping.
  • Several grid between the glass (GBG) options allow you to customize the look of the Westbilt II Pro Series to match any architectural style.
  • Optional extruded aluminum screen frame is strong and long lasting.
  • Frame accessory grooves allow the Westbilt II to be adapted to many different situations.

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West Windows are custom made with the latest Warm Edge Technology - Super Spacer® - the world's only 100% foam, NO-Metal Warm Edge spacing system. Super Spacer® blocks the heat escape path, reduces the risk of condensation, retains optional gas between the panes, and provides one of the best thermal performances in the industry.

9/16" Flat Grids 11/16" Contour Grids 1" Contour Grids

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// West vinyl windows are independently tested for structural strength, air infiltration resistance, water management performance, and forced entry resistance. In addition to these rigorous AAMA tests, West Window voluntarily certifies its products with a third party agency, National Accreditation and Management Institute, to assure the consumer that the windows they purchase are constructed to the same high standards to which they were tested.