How To Measure for Vertical Blinds

Things to Remember:

Use a steel tape for accuracy
Measure Width and write it down, then Length and write it down
Measure to the nearest 1/8 inch
Do not take your own deductions. The factory will take necessary deductions and
allowances.
Double check all measurements
NOTE: All measurements should come from measuring the window. If you
measure your existing blinds, the measurements will be incorrect.

Inside Mount Installation

To find width:
Measure the opening across the top where the headrail is to be installed from inside of
jamb on left to inside of jamb on right. Record the exact measurement to 1/8"

To find length:
Measure from the inside top of the opening on the left, at the center and on the right
to the sill; record the measurement to the nearest 1/8" . Do not make any allowances:
the factory will make all adjustments so the headrail will fit the opening properly and the
vanes will clear the sill by 1/4" to 1/2".

Outside Mount Installation

To find width:
Measure the width of the area to be covered at the place where the headrail will be
installed to the nearest 1/8". Blind should overlap opening at least 4" on each side to
ensure privacy.

To find length:
Measure the length of the area to be covered and record to the nearest 1/8". Blind
should extend at least 3" above and 3" below opening or window molding. For
ceiling-to-floor installations, make adequate allowance for carpeting. Specifying OB
measurement means the factory makes no deduction allowances.

Patio Doors

To find width:
Measure the width of the area to be covered at the place where the headrail will be
installed to the nearest 1/8". Blind should overlap opening at least 4" on each side to
ensure privacy.

To find length:
Measure the length of the area to be covered and record to the nearest 1/8". Blind
should extend at least 3" above opening or window molding. For ceiling-to-floor
installations, deduct 1/2" for proper clearance. Specifying OB measurement means the
factory makes no deductions allowances. To ensure easy access through the door and
allow adequate overlap, consider the stack width.