Measure window blind width at the top of the recess
The greatest worry when you purchase a window blind is whether the blind will fit when it is made. Most window blinds are fitted inside the window recess.
You should always use a steel tape measure. Cloth tape measures can stretch and give an inaccurate measurement.
We measure the window width inside the window recess at the top.
The drop is measured in at least two positions and we use the shorter of the measurements. All of the dimensions are given to the nearest millimetre.
Measure the drop in at least two positions
For vertical blinds top fix brackets are normally used when fitting inside a window recess.
We use the recess sizes and any clearances required to allow the blind to fit the recess are made during the window blind manufacturing process.
Useful advice on measuring blinds