Glass Window Glossary: Identifying the Parts of Windows

Worker is installing a corner window

We use windows in our everyday lives, but rarely do we think about all of the parts that make up a window. You may have heard of the window pane and window sill, but many other components are a part of the finished product. All the lingo and the terms can get confusing, so Springfield Glass Company is here to help. 

In today’s glass window glossary, we outline some key terms and identify the major parts of windows. The next time you’re out shopping for windows, this glossary can serve as your guide.

The Parts of a Window

Windows come in many shapes and sizes, but most of them are made of the same parts. Read on to learn the details.

Window Frame

The window frame consists of the sill, head, and jamb. It’s usually made of wood or vinyl. The sill is the lowest part of the frame, while the head is the highest. The jambs are the vertical sides of the frame. 

Related Post: Different Types of Window Glass

Casing and Trim 

The casing and trim describe the decorative wood that surrounds the perimeter of the window. It covers the space between the wall and the frame.  

Window Glass 

Window glass is that clear material within the window frame. Did you know that window glass is made from silica, the same stuff as sand on the beach? You can read more about window glass edge types by visiting our various blog articles. 

Window Glass Components

A variety of components hold the window glass together. These components may vary depending on the type of glass and window. Once you understand the basics, you can find the exact window part you need.  

Related Post: How to Eliminate Condensation Inside Windows  

  • Pane – A pane is a single sheet of glass.
  • Sash – The sash is the movable part of the window that holds the glass panes together. The sash fits inside your window frame.   
  • Mullion – The terms mullions and muntins often get confused. A mullion is a vertical post or bar that separates window units. Mullions are mostly a structural element, but they can be decorative features in some styles.  
  • Muntins – A muntin is the framing used to separate and hold glass pieces within a window. Muntins are typically made of metal or wood.  
  • Check Rail – Also known as the middle of the window; the check rail is where the sashes of each window meet on double-hung windows.   

Expert Window Installation Services at SGC

Springfield Glass Company offers window replacement and installation services for your home or business. We’ve provided first-rate glass products and professional service for over 30 years. If you live or work in Springfield or the surrounding areas, give us a call. Call 417.883.6555 today, and we’ll give you a free estimate on our window glass installation services.

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