How To Measure Inside Mount Blinds?

Inside mount window treatments are installed inside the window frame or casing – they provide a clean look that can showcase your window size and moldings. If you’re interested in measuring for inside mount blinds, Please follow these steps:

  • Measure the depth of your window frame. You’ll need this measurement to ensure your window recess meets the minimum depth requirement for an inside mount. Refer to the Mounting Requirements section for the window treatment you’ve chosen to ensure your window meets the requirement for an inside mount.
  • Measure the width of your window at the top, middle, and bottom of your window opening and round the narrowest measurement of the three – this will be the number you submit for your window’s width. For Roller shades and vertical blinds, Mark the width at the top of the window only.
  • Measure the height of your window opening in three places: left, center, and right. Use the smallest measurement if you’re measuring for sheer Blinds, vertical blinds, solar Blinds, or roller shades. For all other blinds and shades, use the longest measurement.
  • Order at the exact opening size with no deductions.
  • Double-check that your measurements follow the width-by-height format (W x H).

window measuring

How To Measure Outside Mount Blinds:

Mount outside-mount window treatments on the window molding, wall, or ceiling above your window. You may be required to install an outside mount if your windows do not have sufficient mounting depth. Follow these simple steps to measure your windows for an outside mount window treatment:

  • To begin, measure above the window to ensure there is a minimum of 2″ of flat space on the molding or wall.
    Next, measure the width you wish to cover. recommends at least 1.5″ of overlap on each side of the window for blinds and shades, and 2″ of overlap on each side for solar or roller shades and vertical blinds. The extra width provides more privacy and light blockage. As always, record your measurements down to the nearest 1/8 inch.
  • Determine the location of the headrail – or top – of the window . Install it on the window molding (if a sufficient flat surface is available) or on the wall.
  • Measure each window’s height from the mark to where you want the bottom of your treatment, deciding if it should reach the sill or lower. For protruding windows, consider placing it at the bottom.
  • Watch out for obstructions like doorknobs or molding. If you encounter any, use spacer blocks or extension brackets to ensure your blind or shade extends sufficiently to avoid protrusions.
  • Do not take deductions from your measurements.
  • Double-check that your measurements follow the width-by-height format (W x H).

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