An image of a 620 single-hung window.

Series 610 Single-Hung Window

Featuring a fixed top sash and vertically sliding bottom sash for ventilation, Western Window Systems’ Series 610 Single-Hung Window is easy to operate and ideal for any home style. It can be integrated with Western Window Systems’ hinged doors, sliding doors, and fixed window walls for complete customization.
  • 4.5″ frame depth
  • Heavy-duty hardware
  • Low-E glass, dual-paned
  • Maximum vent size of 48″ in width or 36″ in height
  • Maximum frame height up to 96″
  • Highly configurable
  • Exterior extruded aluminum screening
  • Thermally broken aluminum
An image of a spiral balancer.

Spiral Balancers

Spiral balancers make for better adjustability and smoother operation to control the sash in the open position.

T-latch Window locks

Locking System

Window locks are T-latch and concealed with a slim cover. Available in black and brushed nickel finishes.

Series 620 Sliding Window

Western Window Systems’ Series 620 Slider is made up of two or three sashes aligned horizontally and sliding left or right. One sash slides open in a single slider. A double slider allows both sashes to open. Countless integration options let you customize the window as you see fit.
  • 4.5″ frame depth
  • Heavy duty hardware
  • Low-E glass, dual-paned
  • Double sash option up to 96″ in width or 72″ in height
  • Triple sash option
  • Highly configurable
  • Extruded aluminum screening
  • Thermally broken aluminum
An image of 620 rollers.


All fasteners on the sliding window are stainless-steel.


Aluminum finishes for Western Window Systems’ Series 610 Single Hung Window and Series 620 Sliding Window Lines are available in-stock, as designer selections, or customized to match nearly any color. Samples shown are representative only. For exact paint swatch samples, find a dealer near you.

2023 Finishes


Technical Resources


Screens are included for all single-hung and sliding windows, are finished to match the window’s frame color, and are mounted to the interior. 

Additional Information


Series 670 Hinged Window


Learn More

Series 600 Multi-Slide Door

Classy. Classic.

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A wall of fixed windows bring natural light into this cozy home with a fireplace.

Series 600 Fixed Window

Designed to Integrate

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