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Property Types & Construction

Center Mullion

Definition and meaning of Center Mullion in real estate.

A center mullion is a vertical post or divider that splits a window, door, or cabinet frame opening into two distinct sections. It provides structural support and helps align the moving panels or doors.

In more detail

In kitchen and bathroom cabinetry, a center mullion is the fixed strip of wood that sits in the middle of a double-door cabinet frame. While it adds strength to the cabinet box, it can make it difficult for homeowners to store wide items, such as large platters or pots.

Some modern cabinet designs omit the center mullion entirely to allow for full-access storage, which is a popular selling point for home buyers. In windows and doors, mullions can hold separate panes of glass or help secure lock mechanisms where the two panels meet. For example, some entryways feature double doors that close together without a center divider, which creates a wider opening.

Key facts

CategoryProperty Types & Construction
Primary locationWindow frames, door assemblies, and cabinets
Main disadvantageRestricts cabinet access for wide items
Alternative designMullion-free cabinets or double doors without dividers
Example

A home buyer shopping for kitchen upgrades prefers cabinets without a center mullion so that they can easily slide large baking sheets into the shelves.

Frequently asked questions

What is the difference between a mullion and a muntin?

A mullion is a structural member that divides entire window or door frames, whereas a muntin is a thin strip that separates individual small panes of glass within a single frame.

Can a cabinet center mullion be removed?

It can often be removed during remodeling, but doing so may weaken the cabinet's structural integrity or require installing new, wider doors that overlap in the center.

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