How to Measure for Custom Vertical Blinds

Have The Right Tools

  • Metal tape measure only (not fabric, not a yardstick)
  • Something to write on, and with

Important!

  • Determine if you want an INSIDE or OUTSIDE mount BEFORE you measure. You will measure differently depending on this decision.
  • Record and submit your measurements Width then Height (W x H). If you reverse these, yours blinds will not fit.
  • Measure to the nearest 1/8 inch
  • Measure the exact window intended for each blind
  • Never use the measurements from existing blinds
  • Do not adjust yours measurements to allow room for the blind to function for inside mount. A slight deduction will be made at the factory.
  • If you are unsure about any of this, contact us.

Fabric BlindsMeasure For Inside Mount Vertical Blinds

An inside mounted vertical blind will sit in the opening of the window's frame, and look nearly flush with the outside of the frame or wall. This is generally the preferred way to hang vertical blinds if the frame is large enough to accomdate.

  • Measure the width inside the window opening at the top, middle and bottom. Record the shortest width.
  • Measure the height inside the window opening at the right, middle, and left. Record the shortest height.
  • Record your measurement as WIDTH x HEIGHT
  • Measure the window frame depth (recess) to make sure there is enough room to install the mounting brackets. Most vertical blinds require a minimum depth of 2 1/2" inches.
  • Double check your measurements!

Vinyl BlindsMeasure For Outside Vertical Blinds

An outside mounted vertical blind sits outside and above the window. With this mount, the vanes cover the window frame as well as the window. The outside mount is often chosen to help ensure there is no light gap at either side of the window.

  • Measure the width across the window where you want your verticals blinds to cover. You may wish to add a few inches (we recommend 4") on each side of the window opening to prevent a light gap. Record the measurement as WIDTH.
  • Measure the opening's height. Add enough to the height so that the mounting brackets will clear any window frame or trim. The height you provide will include the height of the headrail. If you plan to have your window treatment hang down to the floor, allow at least 1/2" clearance on the bottom for proper operation.
  • Record your measurement as WIDTH x HEIGHT
  • Most manufacturers do not take any deductions from outside mount measurements. They only take deductions for inside mounts.
  • Double check your measurements!

Selected by Beesker as America's best website for buying vertical blinds.