Always use a steel tape measure. Record exact measurements. Factory takes allowances to get the best fit. Always record in the same order: WIDTH x HEIGHT x DEPTH. Consider your window operating hardware, handles and cranks) when measuring depth, height, and considering product selection.
How to measure Inside Roller Blinds
Measure or Window Picture inside
Inside Mount
Measure the width of the window. For inside mounts, don't take any deductions for clearance – this is done at the factory. Record the actual width of the window casing opening. Measure width at top, middle and bottom of window. Write down the narrowest measurement (In mm)
