Rectangular Shades:

• Rectangular shades include:
• Standard Rectangular
• Cafe Style
• Daytime/Nighttime
• Multiple Shades on a Headrail
• Hi-Rise

Measuring for inside Mounts
Measure the width inside the window opening at the top, middle and bottom. Measure the height inside the window opening at the left, right and center. Order the narrowest width measurement and the shortest height measurement. Remember to always round your measurement to the nearest 1/8".
 

Inside Mount

Measuring for Outside Mounts
Measure the desired width and height. To minimize light leakage, it's recommended that the shade over-lap the window opening at least 2" on each side and at the bottom.
 

Outside Mount

"Rounding" Your Measurements
Dimensions on the order form should be accurate to Within 1/8". With outside mounts, round your measurements up or down to the nearest 1/8". With inside mounts, always round down to the nearest 1/8". Rounding up could result in a shade that is too wide to fit within the window opening.
 

Arches and Circles
Included in this category are arch, operable arch, circle, and quarter circle. Similar rules for measuring rectangular shades apply to arches and circles, as well.
 

For inside mounts, measure the exact width and height inside the window opening. For outside mounts, measure the desired width and height. Always measure the height at its tallest point.

With perfect arches and circles, the height will either equal the width (circle and quarter circle) or equal one half the width (arch). With imperfect arches, these simple height/width relationships do not occur.

Angles
With angles, either the top or bottom of the shade is sloped, or angled. All four sides must be measured to ensure accurate fabrication, Measure the inside of the window opening for inside mounts. When measuring for outside mounts, remember to add the desired amount of overlap.

In the diagram below, the vertical measurements are labeled "LH" for left height and "RH" for right height. The horizontal measurements are labeled "S" for slope and "W" for width. The V slope angle" is the angle between the slope and a horizontal line. The angle is measured in degrees using a protractor. Record all your measurements on the template you create for the shade. Use the tallest height measurement when pricing the shade.
 

Specialty Shapes
With specialty shapes, one or more sides of the shade are angled. Specialty shapes include hexagons, octagons, and trapezoids. The procedures for measuring hexagons and octagons are similar to those for rectangular shades. Simply measure the window height and width appropriately for an inside or outside mount. Be sure to measure the width at the shade's widest point.
 

When measuring for trapezoids, measure the window height, the top and bottom widths, and the length of the sloped side(s). Then measure what the width reduction of the shorter rail will be on each side. The maximum reduction is 9" per side.

In the diagrams "H" is the vertical height, "TW" and "BW" are the top and bottom widths, "LS" and "RS" are the lengths of the left and right sloped sides, and "LR" and "RR" are the left and right width reductions of the shorter rail. Record all measurements on your template. Use the widest width measurement when pricing the shade.
 

Skylight With Side Channels
The procedures for measuring window openings are identical to those for standard rectangular shades. For inside mounts, measure the width and height at three locations inside the window opening, as shown in the illustration below. Order the narrowest width and the shortest height. For outside mounts, measure the desired height and width, allowing for an appropriate amount of overlap.
 

The inside mounting depth requirements are different, however, because of the side rails which are used with the shade. Those depth requirements are shown in the chart below.

Outside mounting surface requirements are the same as those for standard rectangular shades.