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Cellular Shades | How To Measure

Selecting the Type of Mounting:

Determine whether the cellular shade is going to be installed inside the window frame or

outside the window frame.

Inside Mount (IB):

Inside mount installations are often preferred because the shades take up less space in the


Measuring the Width and the Length for Inside Mount:

For the width, measure across the top, middle, and bottom of the window opening. Using the narrowest dimension, measure to the nearest 1/8”. By using the narrowest measurement the shade will operate correctly.

For the length, measure the up and down dimension on the left, center, and right side. Use the longest length measurement, measuring to the nearest 1/8”. The factory will make any appropriate deductions. Do not make any width deductions.

Outside Mount (OB):

Outside mount installations are mounted on the wall or on the window molding. It is best to overlap the window opening at least ¾” on each side when measuring for cellular shades.

Measuring the Width and the Length for Outside Mount:

Measure the area that the cellular shade is to cover. For cellular shades it is recommended to overlap the window opening by at least ¾” on each side for a total of 1 ½”. To allow for enough space for the mounting brackets and to cover the bottom of the window, the suggested overlap for a cellular shade is at least 3” (1 ½” above the window opening and 1 ½” below the opening). If the window opening has a sill, measure from where the top of the cellular shade will be located to the top of the window sill.

Confirming Measurements:

The most common error in ordering cellular shades is reversing the width and the length measurements. Always confirm that the width is the measurement that goes across from left to right and that the length is the measurement that goes from top to bottom.

Note: When outside mount cellular shades are specified, no factory deductions are taken.

In compliance with the latest manufacturing safety guidelines Blinds Northwest Window Fashions includes with each fully-assembled product warning tags, warning labels, safety devices and cord cleats. Installers of the finished product must adhere to the safety guidelines as established by the installation instructions and by using all devices provided by the manufacturer. It is the responsibility of the installer, as well as the end consumer, to see that all safety devices are properly installed according to the manufacturers installation instructions included with each device and remain so throughout the life of the product. Blinds Northwest Window Fashions is not liable for injuries or fatal occurrences related to improper installation or maintenance of required safety devices.

Manufacturing specifications, options, surcharges, and pricing are subject to change without notice.

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