Window-covering term

Headrail

The top rail that supports or houses the operating mechanism of many blinds and shades.

Why it matters

Its depth and clearance can affect replacement and retrofit feasibility.

Last reviewed: 2026-08-06 · Editorial basis and linked source records.

A treatment installed within the window opening.

A treatment installed on wall or trim outside the window opening.

A device or system added to an existing window covering to move its existing mechanism.