How to Measure Doors and Blinds
With a metal measuring tape measure each window individually as size variances are common. Record WIDTH first, then HEIGHT to the nearest 1/8″.
Inside Mount Installation (IM)
There is a minimum windowsill depth for blinds or shades mounted inside the window opening and there is also minimum depth for the blinds to fit flush with the wall (see chart below).
PRODUCT
2″ Horizontal Blinds
Vertical Blinds
Bamboo & Roman Shades
Roller Shades
MINIMUM DEPTH REQUIRED
1 1/8″
2″
1″
2″ (*)
DEPTH REQUIRED FOR FLUSH MOUNT
3″
3″
2 1/8″
3″ (*)
(*) Depends on the clutch mechanism and if the installation brackets are to be mounted horizontally or vertically.
Important Note: On Roller Shades, the fabric will be 7/8-1 1/8 narrower than the shade headrail width resulting in a 7/16-5/8 light gap on each side of the shade. If full coverage is required order an outside mount shade.
To mount blinds and shades inside the window opening, measure the Width of the opening in 3 places (top, middle and bottom). Take the smallest of the 3 measurement. Similarly, measure the Height in 3 places (left, middle and right) again take the smallest measurement.
Remember to round the measurements to the nearest 1/8″ and record them as these are the Width and Height you will order. Do not make any deductions as the factory will do so.
Outside Mount Installation (OM)
There is a minimum windowsill depth for blinds or shades mounted inside the window opening and there is also minimum depth for the blinds to fit flush with the wall (see chart below).
PRODUCT
Vertical Blinds
Horizontal Blinds
Bamboo & Roman Shades
Roller
Shades
MINIMUM DEPTH REQUIRED
6-8″
4″
4″
DEPTH REQUIRED FOR FLUSH MOUNT
3-4″
4″
4″
Important Note: If there is wall space only on one side of the opening then add only half of the recommended overlap. For Roller Shades, the fabric will be 7/8-1 1/8 narrower than the width of the shade headrail.