Zwick Window Shade Measuring Guide
How to Measure Roller Blinds and Measure Shades
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#1 INSIDE MOUNT |
Measure accurate to the 1/16th of an inch where the brackets are to be mounted. At the top of the window, and each window that a shade will be installed in. |
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#4 OUTSIDE MOUNT |
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Measure where the brackets are to be mounted. Keep in mind the actual shade material will be 1/2 inch less on each side.
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Cloth tapes and yard sticks aren't accurate enough
How to read a tape measure

For inside measuring, the entire ruler case should be inside the frame. The backside of the ruler should rest against the inside of the frame. Different brands of rulers have different add-ons for inside measures. It will say somewhere on the ruler (usually the back) how much to add for an inside measure. This particular ruler has an add-on of 2 inches.
For example, if you read 36 3/16 when the case and hook are inside the frame, the real measurement with a 2 inch add-on is 38 3/16.
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The hook can make a different of 1/16th of an inch on measuring. The hook should be pushed in for an inside measure against the frame. For an outside measure, the hook should be extended. |
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