Vertical Blinds Measurement Guide

Measuring your windows to decide which size of vertical blind to order is easy. Just follow these simple steps. Please use a metal tape measure to take measurements and use centimetres to the nearest 0.1cm.

Bay Window Measurements

We have created a document showing detailed instructions on measuring your bay window for our vertical blinds.
View PDF

Recess Measurement

Used when the vertical blind is to be fitted inside the window recess.

Recess Width:

  1. Take 3 measurements for the width of the window recess as shown in the picture.
  2. Take the smallest of these measurements. This is the recess width.
  3. We will make the necessary deductions for the fittings & brackets to ensure the blind operates perfectly within the window recess.
  4. For vertical blind recess measurements a deduction of 1.5cm in total will be made on the head rail width. This will allow an operating clearance of 0.75cm at each side of the head rail.

Recess Drop:

  1. Take 3 measurements for the drop of the window recess as shown in the picture.
  2. Take the smallest of these measurements. This is the recess drop.
  3. We will make the necessary deductions for the fittings & brackets to ensure the blind operates perfectly within the window recess.
  4. For vertical blind recess measurements a deduction of 1cm will be made on the drop of the blind to allow for an operating clearance at the bottom of the blind.

PLEASE NOTE that the complete size of the blind includes the headrail and all the brackets etc.

Exact Blind Measurement

Used when the vertical blind is to be fitted outside the window recess.

Exact Blind Width (also known as pin width or finished blind width):

  1. Decide how much you wish to overlap the recess at each side. We recommend at least 75mm or 3 inches each side to avoid gaps of light.
  2. Take the overall width measurement including the overlap. This is the Exact Blind Width. We will not make any deductions from the exact blind width measurement given.

Exact Blind Drop:

  1. Decide how much you wish to overlap the recess at the top & bottom. We recommend at least 75mm or 3 inches at the top if the blind is required to roll up fully above the window recess.
  2. Take the overall drop measurement including the overlap. This is the Exact Blind Drop. We will not make any deductions from the exact blind drop measurement given.

PLEASE NOTE that the complete size of the blind includes the headrail and all the brackets etc.

Louver's Only

Used when the vertical blind requires the louver's only.

Louver Only Drop (used only for the replacement of louver's when you have the headrail and fixings already):

  1. Measure the louver's exact from the top of the material to the bottom.
  2. The number of louver's you would require is the amount you currently have hung.

All our blinds come with all the fittings you'll need, along with instructions for easy installation. You may also like to see our vertical blinds installation guides [coming soon].

If you have any other queries about installation or measurements, please feel free to contact us.