Inside-Mount Shutter Measuring: Step by Step
Inside-mount shutters sit within the recess, so final readings need to describe the smallest usable opening accurately. Use that result for this step.
In this article
- Measuring for an Inside Mount
- Inside Mount — Square-Set Window
- Inside Mount — Window with Architrave
Before you measure: check usable recess depth
For an inside mount, start by checking the shallowest clear depth in the recess. As a general guide, aim for approximately 70 mm of unobstructed space, measured only to the first handle, winder, lock, key, flyscreen or other fitting that projects into the shutter area.
If you have around 70 mm or more of clear usable depth, you can normally continue with the inside-mount measuring steps.
Less than 70 mm does not automatically rule out an inside mount. Frame choice and obstruction position can change what is possible. Check Handles, Winders & Other Shutter Obstructions before finalising the mount.
Inside-Mount Measurements
After confirming that an inside mount will work, take the order width and drop. Because window openings are often slightly out of square, take readings in several positions instead of relying on one width and one height.
At this stage, use a metal tape measure and record every reading as you go. Supply the measured dimensions requested in the guide and do not apply your own manufacturing deductions.
Inside Mount: Square-Set Window
- Take the drop at the left, centre and right of the opening.
- Take the width at the top, middle and bottom of the opening.
- Submit the smallest width and the smallest drop from those readings.
Inside Mount: Window with Architrave
For an inside mount, ignore the outside edge of the architrave and measure the opening within the recess itself.
- Take three separate drop readings.
- Take three separate width readings.
- Submit the smallest width and the smallest drop from those readings.
Before ordering: if usable recess depth is below approximately 70 mm, or if handles, winders, locks or flyscreens enter the shutter space, check Handles, Winders & Other Shutter Obstructions before finalising your inside-mount dimensions.
Ready to Enter the Shutter Order?
Once the measurements and layout are confirmed, enter them on the plantation-shutter product page.