For Outside Measurement
Please use a metal tape measure as cloth tapes may be unreliable.
Decide how much you want the blind to overlap the recess. We recommend a minimum overlap of 50mm (2″) each side.
For Inside Measurement
Please use a metal tape measure as cloth tapes may be unreliable.
In case of all window blinds, excepting roller blinds, the recess width and drop should be measured in several places, giving the smallest dimensions in both cases. Allow for obstructions such as tiles, catches, handles or skirting boards. When ordering, state measurements as RECESS SIZE and we shall make the necessary allowances.