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How To Measure Windows For Vertical Blinds

Advice on how to purchase the correct size Vertical blinds.

A vertical blind uses vertical strips or louvres which can be tilted opened or closed to give privacy or limit the amount of light entering the room. When open, the louvres can be stacked back from the centre or to one side.

Sidewinder controls are available with cord and chain to control the opening and closing of the blind, and the tilting mechanism

Blind Measurements

Blinds may be fitted either inside or outside the window recess. When deciding whether to fit the blind inside or outside the recess, consider the following points :

It will be necessary to fit the blind outside the recess if :

  • The recess is less than 7.5cm deep
  • The window opens inwards
  • The window is not straight (width or height varies by more than 2cm)
How to measure inside a recess

Measuring for a blind to fit inside a window recess :

  • Always use a metal tape and measure in millimeters
  • Measure the width (wall to wall) and drop in at least three positions taking account of any protrusions such as tiles, dado rails etc.
  • Make a note of the smallest width and drop measurement and quote these as the Recess Size. We will deduct 0.5cm for fittings
  • All blinds are supplied on a track cut to the exact width complete with fittings and are ready to hang from simple press on brackets
How to measure outside a recess

Measuring for a blind to fit outside a window recess

  • Always use a metal tape and measure in millimeters
  • Measure for the width and drop. We would recommend that you allow the blind to extend approximately 10cm either side of the window and 10cm above and below the window.
  • Make a note of the required width and drop measurement and quote these as the Blind Size.
    Your louvres will measure 5cm less than the overall drop quoted to take account of the headrail fitting and clearance from the sill.
  • All blinds are supplied on a track cut to the exact width complete with face fixtures for outside recess only and fitting instructions.