Windows 101

When selecting the right windows for your project, there’s a lot more to consider than just measurements. With so many options available, it’s important to be familiar not just with designs, but also the components and energy-saving features that go into building the perfect fit. Let’s shed some light on the basics:

Window image

Anatomy of a Window

  1. 1 - Frame/Jamb

    The outer structure of a window that holds the sash in position.

  2. 2 - Divided Lite

    Decorating grids either between the glass or on the surface provide the appearance of separate window panes.

  3. 3 - Stile

    The vertical sections of the sash.

  4. 4 - Upper Sash

    The upper assembly of stiles and rails forming the framework. The upper sash will slide up and down in a double-hung window, but will not move in a single-hung window.

  5. 5 - Lower Sash

    The lower assembly of stiles and rails forming the framework.

  6. 6 - Rail

    The horizontal section of the sash.

  7. 7 - Sill

    The horizontal member that forms the bottom of a window frame.


Let the light shine through, along with ideas and inspiration by visit our online Windows experience.

Window Styles

Interior Doors, Door Handling

Single-hung windows

Single-Hung windows feature a lower sash that slides vertically to open.

Interior Doors, Door Handling

Casement Windows

Casement windows are hinged at the side and swing out to open.
Interior Doors, Door Handling

Double-Hung Windows

Double-Hung windows can be raised from the bottom or lowered from the top.

Interior Doors, Door Handling

Awning Windows

Awning windows are hinged at the top and open from the bottom and swing out.

Interior Doors, Door Handling

Sliding Windows

Sliding windows have one or more sliding sashes, and open horizontally (side-to-side).

Interior Doors, Door Handling

Fixed Geometric/Radius

Geometric windows are available in many different shapes and generally do not open.
Interior Doors, Door Handling

Bay/Bow Windows

Bay windows feature several windows with angled sides, maximizing the view and opening outward.

Window Material


Aluminum windows are a lightweight, yet strong alternative to more expensive wood windows. They are corrosion-resistant and offer great performance in many climates.


Vinyl windows are constructed from durable plastics and are energy efficient. They don’t ever require painting because they don’t fade, peel, or rot.


Wood windows provide a wealth of natural beauty, but require more maintenance than aluminum or vinyl windows. Each species of wood features a range of characteristics offering detailed touches of warmth and elegance.


Clad-wood windows are simply wood windows protected with a layer of metal. They require very little maintenance due to the fact that exterior painting or finishing is not necessary.

Types of Glass

Energy Efficient Glass (Low-E)

Energy Efficient Glass (Low-E)

Low-E coatings minimize the amount of ultraviolet and infrared light that passes through glass without compromising the amount of transmitted visible light. The coating is an extremely thin layer of metallic particles that allows the glass to act like a reflector. The result is a home that stays cooler in the summer and warmer in the winter. Low-E glass is not the same as tinted glass.

Tinted Glass

Tinted Glass

Where as Low-E glass adds a coating of metallic particles to the glass, tinted glass adds the reflective metal particles to the glass itself. It is ideal for climates with excessive sunlight because it reduces the transmittance of light and glare.

Textured/Decorative Glass

Textured/Decorative Glass

Textured glass offers both elegance and privacy. It provides a beautiful way to allow natural light into a room while maintaining privacy. Textured designs diffuses light while delivering artistic impressions to enhance any living space.

Protective Glass

Protective Glass

The windows of a home should offer protection from storms, intruders, fire, and loud noises. Impact resistant glass, tempered glass, and sound reducing glass are some smart options that help create safer and better performing windows in a home.