How to Measure a Window Recess for Shutters
Recess depth tells you how much clear space is available for an inside-mounted shutter.
Check your recess depth before measuring
As a clear guide, allow approximately 70mm of clear recess depth for an inside-mounted plantation shutter. Confirm the shallowest usable depth and measure to the first obstruction that could interfere with the shutter, including a handle, winder, lock, key, flyscreen or other window fitting.
Where the opening has around 70mm or more of clear space, you can typically proceed with the inside-mount measuring instructions.
Have less than 70mm, or an obstruction in the recess? An inside mount may still be possible based on the frame choice and where the obstruction sits. See our Managing Window Obstructions guide for the detailed clearance requirements.
Find the front reference point
Measure from the front face of the recess inward toward the window. Use the same reference plane around the whole opening.
Examples of obstructions
Security boxes, locks, winders, and handles.
Measure to the first obstruction
Stop at the first handle, lock, flyscreen, mullion or moving window part that could conflict with the shutter. This is the usable depth.
Check several positions
Measure near the top, centre and bottom on both sides. Use the shallowest clear dimension when checking frame suitability.
Operate the window
Open the sash and use the handle or winder. Confirm the moving parts don’t enter the space you are counting as clear depth.
Prior to releasing the order: if your recess is less than approximately 70mm deep, or incorporates handles, winders, locks, flyscreens or other obstructions, check our Managing Window Obstructions guide before finalising your inside-mount dimensions.
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