Inside Fixing: If the blind is
to fit inside a window recess, please` provide exact recess width
(G) and drop(H) measurements.
Outside Fixing: Please provide
the track width (I) and not the window width. We recommend
the track should extend at least 10cm (4") each side of the
window. The drop length measurement (J) should be from the
top of the heading to the bottom of the blind when lowered.