25 Main Parts of a Window (Diagrams)

Are you aware that a modern window consists of about 25 essential components.? These components play a role to ensure the efficiency and perfect working condition of a window. This article willenlighting you by providing you the features and what functions they play in the overall working condition of a modern window.

Windows are openings in walls, doors, or vehicles that allow the passage of light. Windows are important for a household's energy efficiency because they're how homes let heat and light in and out. Proper window placement and type are essential for energy-efficient building design making and it is a crucial part of the building envelope.

window components

Below are the important component that makes up a modern window.


Head Jamb

Side Jamb

The key horizontal components that are part of a window setup are the head jamb. The head jamb sits at the very top of the window frame and provides the window frame with structural support. The sash of the window rests against it. To maximize airtightness, the jambs can be fitted with jamb liners.


Side Jamb

window frame jamb

The side jamb is the vertical part that holds firmly the window frame. It ensures the window doesn’t just swing to the other side when the window is closed.


Sill

windows Sill

Window sills are among the best-known parts of a standard window. A window sill is part of the window trim, the decorative covering around the window's edge that protects where the window attaches to the wall and prevents drafts and moisture from getting into the home.


Head Casing

Head Casing

The head is simply the horizontal part of the window frame. It is attached to the head jamb. The head casing is the finished trim at the top of a window frame that covers the space between the top of the window frame and the wall.


Stile

window Stile

Stiles is the main vertical components in the window frame of a sash that is found at the sides of a window.


Casement

Casement window

The casement is the part that is attached to the window frame by one or more hinges at the side. They are used singly or in pairs within a common frame, in which case they are hinged on the outside. Casement windows are often held open using a casement stay.


Fanlight

Fanlight window

A fanlight is a top opening of a window, hetiny window over a separate window. The primary objective is to provide ventilation, but they may look fussy. Cleaner lines will create a tidier and more balanced look for your house.


Muntin

Muntin

Amuntin is the bar or strip of wood or metal between adjacent panes of glass that create a grid or latticework appearance. It demarcates a window section into two and as well beautiful the outlook of the entire window structure. In modern windows, they are primarily used for aesthetic purposes only.


Top Rail

Top Rail

Every window has a top and bottom rail. The top rail is the horizontal members of the sash. The rails fit between vertical components of a window.; rails are located at the center of a double-hung window opening and are known as “meeting rails.”


Bottom Rail

Bottom Rail

The bottom rail is the lowest horizontal part of the window frame that connects its vertical parts.


Glazing

glazing

The glazing is the glass in the window. The term used to refer to the transparent material of a window. Glazing is a term used for the process of mounting glass into windows and doors and also refers to the glass or plastic panes themselves.


Mullion

Mullion

A mullion is a vertical element that forms a division between units of a window or screen or is used decoratively. its primary purpose is to provide rigid support to the glazing of the window.


Stool

Stool

The stool is the interior shelflike piece also known as the sill. Window stool is a part of the window that is not outside but inside the building. It is a flat seat that extends inward from the bottom rail of a sash. Although there was no regular width for a sill, the stool was generally three to four inches high, at least in older homes.


Apron

Apron

The apron is the decorative raised section below the window sill. It is a decorative trim installed immediately below the window's stool against the wall. An Apron is the flat member of the inside trim of a window placed against the wall immediately beneath the stool.


Transom

Transom

A transom is a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. It is paired with a mullion that divides a window’s upper part into additional lights. When transoms are positioned, generally they will be placed above head height to avoid obstructing the view from a window.


Channel

window Channel

A channel is a glass run groove, mostly made of rubber or plastic, that is found around windows. Its primary purpose is to provide a seal for the window.


Spacer

Spacer

The Window spacers are materials that are used to hold the glass in place between window panes. Additionally, window spacers also help keep a tight seal around the edge of the glass panes. A tight seal improves the efficiency of windows by preventing the escape of insulating gases (krypton or argon) from escaping.


Pane

Pane

The Window panes are the sheets of glass inside the window frame.  Depending on the type of window, they may be single-pane thickness, double-pane, or energy efficient.


Pulley

Pulley

The Pullysystems are used to raise and lower window blinds or adjust the blinds to open or closed positions.


Lift

Lift

A lift is the window handle on a single- or double-hung window type that is attached to the bottom of the lower window sash to help open and shut the window easily. It is important to point out that not all windows have a lift.


Air Latch

Air Latch

The air latch is the part of a window that makes it possible to keep the window open irrespective of the position you set your window glass.


Sash Lock

Sash Lock

The sash lock is simply the locking mechanism attached to a window. It is most common in a single-hung or double-hung window.


Window Frame

Window Frame

A window frame is the window framework attached to the window edge that surrounds and supports the entire window component. It is comprised of the head jamb, side jambs, and sill. A window frame is the combination of the head, jambs, and sill that forms the exact opening in which a window sash fits.


Jamb Liner

Jamb Liner

A jamb liner is a strip that goes on a window frame's sides that provides the window sash with a snug fit.


Balance

Balance

A balance is a component present in single- and double-hung windows that use a spring mechanism to help with the weight of the sash as the window is opened and closed. Balances sit inside the window frame so they are somewhat hidden.

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