Measuring Instructions - General Guidelines

The following is a list of things you should keep in mind as you start measuring your windows. However, you should also refer to the product specific measuring instructions that are located on every product page under the "How To" tab.

Measuring your windows is easy. If you choose to do it yourself, following these directions will help you to take a good measurement, and will ensure our products will install well and look their best. Most handy homeowners have all the tools and skills needed to install our blinds, shades or shutters. We have selected top quality easy to install products. To work properly, correct measurements are a must! Verify all of your measurements, to be sure, by measuring twice for each window.

Before taking any measurements, look at your window and decide if you want to mount the window treatment inside the window recess, or outside on the wall or molding. If you have any questions or concerns about measuring or where to mount your window treatments, contact us. It is important the measurements are accurate as you are responsible for these measurements. Outside the window mounting is useful in all of the following situations:

• You have shallow window frames (under 3 inches).
• You have irregular or non-rectangular windows.
• You want to have greater privacy or light protection.
• You want your windows to look larger.

Measuring for Blinds and Shades


We recommend the following for inside mount:

  • Use a steel measuring tape
  • Take three width measurements- from side to side near the top, middle and bottom.
  • Take two height measurements- top to bottom on the right and on the left..
  • Measure to the nearest eighth of an inch - don't round up or down.
  • Write Your Measurements down Width first, then Height - Use the Smallest Width
  • For height of horizontal blinds, use the largest height. For other products, use the smallest height.

Keep these in mind:

  • Inside mounted blinds and shades have deductions taken by the factory (1/8" to 1/2") - take actual window OPENING Size.
  • Extension Brackets are for clearing casing that is deeper than 3/4" from wall.
  • Valances on inside mounts are not flush with wall (they usually stick out about 1-2 inches).
  • Sliding Glass Doors usually use a one way draw.

Window Measurements:
When measuring for both inside and outside mounts, the finished measurements of the window treatment are from the top of the head rail to the bottom of the bottom rail (or in the case of verticals the bottom of the vanes) for the height. The width is from the left edge of the window treatment to the right edge. Inside mount treatments do have a deduction to allow for their installation- they will arrive slightly smaller than the measurements you provide, so they can be properly installed.

An Important Note Regarding Windows.
Don't be surprised to find that your windows aren't square - most aren't. If they're a little out of square, it probably won't be noticeable. If your window is a lot out of square, you should strongly consider an outside mounting to hide the window, and allow for installation.