Anatomy of a Window: The Ultimate Guide to Window Parts

Our goal in the window industry is to make getting replacement windows simpler than ever. See our guide on the anatomy of a window for information on everything from energy efficiency to privacy and protection. Each component of a window has a distinct function and adds to the window's overall effectiveness.

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Anatomy of a Window and Its Parts

The anatomy of a vinyl window is represented by the main parts of the window. Each component of the anatomy of a window frame is individual.

The anatomy of a window and its opening includes:

  • Head. The head is the horizontal component at the top of the window frame. It stands for the highest point of the window. The height of the window is typically measured from the head to the sill.
  • Sill. The anatomy of a window sill is the window frame's bottom horizontal section. The sill is also referred to as a horizontal strip. It is the area of a window that you frequently lean against or put objects like potted plants on. A sill is required for the windows in order to prevent rotting and other damage to the structure. So-called stool may be seen on the exterior of the sill. It rarely lies below 90 degrees and is somewhat angled toward the ground.
  • Jamb. The window frame's vertical sides are known as the jambs. The jamb, which runs from the bottom to the top of a window on both the left and right sides, is a component of the window frame. The jamb, which holds the window panes in place, is a crucial component of the window structure.
  • Apron. The apron, which is a decorative element, is positioned below the window's sill or stool.
  • Weep holes. The openings called weep holes are incorporated into the bottoms of metal and vinyl window frames. They enable rainwater that accumulates in window tracks to flow off.

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Parts of a Sash Window Frame

The anatomy of a sash window are components which support the window panes and glass frames. By operating the sash the window is opened and closed. Sashes with non-opening windows are fixed.

So, what are the parts of a sash window called?

The parts of a window sash are:

  • Pane. Your window's pane is made up of glass pieces.
  • Rail. The window rails are the top and bottom portions of the sashes. Two rails are located on the top sash and two are located on the bottom sash of, for example, a double-hung window.
  • Spacers. Double and triple-pane windows with Vinyl Light warm-edge spacer system between the glass panes help with windows’ insulation.
  • Sash locks. This locking system keeps your windows safe and stops them from rattling.
  • Lift or crank handle. The sash can be raised and lowered or opened and closed with the lift or crank handle.
  • Weatherstripping. Weatherstripping is installed around the window frame and sash. It adds an additional layer of weather resistance and energy efficiency.

Anatomy of a Window and Its Parts

Anatomy of a Casement Window

Casement windows are commonly seen in bedrooms, over counters in kitchens or in hard-to-reach places.

The anatomy of a casement window considers:

  • Hinges which are typically located on the side jambs. The hinge's base has hinge tracks that keep it fastened to the window and frame. It gives the window a range of motion and prevents it from falling.
  • Crank which is turned in order to open the window is located on the underside of the trim or the underside of the grills. It directly interacts with the hinges.

Anatomy of a Bay Window

A bay window is a projection window, meaning it extends outward from the exterior of your home similar to a bow window. This window type has a more complicated installation process, that’s why the bay window and its replacement cost extra.

The anatomy of a bay window includes:

  • A row of windows, including a large picture window in the center and two smaller windows on either side.
  • Among the two windows on the sides can be: casement windows, double-hung windows or fixed picture windows.
  • A bay seat or ledge area since they protrude past the home's wall.
  • Roof on the top from shingles or metal
  • Skirt on the bottom which very often the installer has to build.

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Anatomy of a Double-Hung Window

Even with the window open, double-hung windows make you feel safe, secure and are simple to maintain. Consider our Vinyl Light double-hung windows if you need new windows for your house.

The anatomy of a double hung window includes:

  • The operable upper and lower sashes which are separate.
  • Strike mechanisms which lock the sashes. They are frequently located on the upper portion of the lower sash.
  • The sashes slide up and down to open. You can choose to open the bottom sash up, the top sash down, or both sashes halfway. To make cleaning easier, you also have the option of tilting the sashes inward.
  • Ventilation latches which help to improve airflow. The window can only open a few inches thanks to the latches. This gives you access to fresh air while still keeping the level of security you desire.

Anatomy of a Sliding Window

Windows with sliders move from side to side. The fact that sliding windows are available in greater and longer sizes is one of their greatest advantages.

The anatomy of a sliding window includes:

  • A sliding window's head and sill allow the operational sash to slide inside of them.
  • Sash pull which refers to the handle on the operating sash to pull the window open.
  • Locks which are frequently found on the working sash, on the side that is opposite the sash draw.

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