Why it matters
Linkage, dimensions, and resistance to movement matter for a mechanism review.
Last reviewed: 2026-08-06 · Editorial basis and linked source records.
Window-covering term
Louver
An adjustable blade inside a shutter panel that changes light and privacy when tilted.
Related terms
Visible tilt rod
A front-mounted bar that links shutter louvers so they turn together.
Hidden tilt
A shutter-louver linkage positioned behind or within the panel instead of using a front-mounted tilt rod.
Shutter panel
A framed section of interior shutters that contains louvers and may swing open on hinges.
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Source basis
Norman Window Fashions: PerfectTilt G4 Motorized Shutters Program Binder (manufacturer-technical-documentation)