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Selecting the Type of Mounting:
Determine the type of mounting installation.
Blinds are mounted in two ways, inside the window frame or outside the window frame.
INSIDE MOUNT:
Inside mounts are often preferred because they provide a
finished look without covering the window molding.
Measuring Width and Length for Inside Mount:
For the width, measure across the top, middle and bottom of
the window opening. Measure to the nearest 1/8", noting the
narrowest measurement you will allow the blind to operate
correctly.
For length, measure the up and down measurement on left,
center and right side. For horizontal blinds note the longest
measurement, measuring to the nearest 1/8".
For vertical blinds, note the shortest length measurement,
measuring to the nearest 1/8".
Note that inside mount blinds will have a factory deduction
in the width and length for proper operation. do not take
any deductions.
OUTSIDE MOUNT:
Outside mounts are mounted on the wall or molding. It is
best to overlap the window opening at least 1 1/2" on each
side when installing horizonal blinds and 3" on each side
when installing vertical blinds.
Measuring Width and Length for Outside Mounts:
Measure the area that the blind is to cover.
For horizonal blinds it is suggested to overlap the window
opening by 1 1/2" on each side for a total of 3". By providing
overlap, privacy is maintained.
For vertical blinds it is recommended to overlap the window
opening by 3" on each side for a total of 6". It is suggested
that a vertical be mounted 3" above the window opening.
Allow enough space above the window for the mounting
backets:
Horizontal blinds allow 2" inches.
Vertical blinds allow 3" inches.
When outside mount blinds are specifed, no factory deductions are taken; the blind will be made to the size that is specified.
Confirming Measurements:
The most common error in ordering blinds is reversing the
width and length measurement. Always confirm the width
being the measurement that goes across and the length
being the up and down measurement.