How to Measure Windows for Plantation Shutters

Plantation shutters are a precise, permanent covering, so measuring them correctly matters even more than with blinds. While a professional measure is the safe path, understanding how it works helps. Here is how windows are measured for shutters, and what makes the fit perfect.
Inside vs. outside mount first
As with any covering, the first decision is inside or outside mount, and it changes the measurements. Inside-mount shutters fit within the window frame for a clean, recessed, built-in look, if the window has enough depth. Outside-mount shutters mount on the wall around the opening, useful for shallow windows or to make a window look larger. The mount decides how you measure.
Measuring width and height
For an inside mount, width is measured at the top, middle, and bottom of the opening, using the narrowest for a clean fit, and height at the left, center, and right. For an outside mount, you measure the area to be covered plus overlap. These multi-point measurements catch windows that are out of square, which most older windows are, so the shutters fit precisely.
Checking for square and depth
Two things make or break a shutter fit: square and depth. Windows are often slightly out of square after years of settling, especially on Houston’s clay soils, so measuring in multiple places is essential. And inside-mount shutters need enough frame depth to house the panels, if the window is too shallow, an outside mount or a frame solution is used instead.
Why shutters need a pro measure
Because shutters are custom, permanent, and non-returnable, a measuring error is costly, and the details, square, depth, mount, frame, and hardware clearance, are easy to get wrong. This is exactly why we measure for you and guarantee the fit. A shutter that fits perfectly looks built-in, one that does not never quite looks right.
We measure and guarantee the fit
For shutters especially, professional measuring is well worth it, and it is free with us, along with installation. At your free estimate we handle every measurement and guarantee the result, so your shutters fit flawlessly. Call or text (832) 772-7137.
Ready for a free in-home estimate?
We’ll measure, recommend the right options for your home, and give you an honest quote, with free installation included. Already know your sizes? Order online and we’ll send a free quote within 24 to 48 hours.

How Much Do Blinds, Shutters & Shades Cost in Houston? (2026 Guide)
Blinds vs. Shades vs. Shutters: Which Is Right for Your Home?
Child-Safe & Cordless Window Coverings: What Parents Need to Know