Rectangular Shading
Precise width and height measurements are critical, especially for inside-mounted shadings. For example, if an inside mount is ordered too wide, it will not fit within the window opening.
Fabric length must allow the bottom rail to free-hang for the vanes to open and close properly. All measurements should be rounded down to the nearest 1/8" for proper fit and operation. Do not make any deductions. All deductions will be made at the factory.

Importance of Correct Shading Height Because the bottom rail pivots when the vanes are opened and closed, as shown on right, proper height measurement is critical in applications where the window shading closes just above a window sill or floor. If the window shading is too long and the bottom rail rests on the sill or floor when it is fully lowered, the rail cannot pivot freely and the vanes cannot be opened properly.

TO OPEN VANES

TO CLOSE VANES

1. Measure the desired width at the center of the window opening. A 3" overlap on each side is recommended to eliminate any potential light gap. Alternatively, the fabric may be aligned with window moldings or other design features.
   
2. Measure the desired height, allowing at least 2 1/2" overlap above the window opening to accommodate the headrail.
   

1. Measure the width at the top, middle, and bottom of the window opening. Order the narrowest measurement.
   
2. Measure the height at the left, center, and right of the window opening. Order the shortest measurement.
   
3. Measure window on the diagonal. If the two diagonal dimensions are not exactly the same, it may be more appropriate to specify an outside mount shade for optimal light control and privacy.
   

For Added Clearance (optional)

Spacer Blocks or extension brackets can be used on outside mounted applications to gain additional clearance when obstructions, such as window cranks or handles, prevent free movement of the shading. Each spacer block adds 1/2" of clearance; a maximum of three can be used, for a total of 1 1/2". Extension brackets can add up to 3" of additional clearance.

NOTE: Outside mount recommended for windows greater than 1/2" out of square. Measure diagonally corner to corner to verify squareness. Measure top of window opening front to back to verify depth
variances.