2.7 MM cord loops fit most manufacturers blinds. Used on Hunter Douglas, Levolor, Kirsch, Graber, Bali and more. Fits most cellular and pleated shades (2.7 mm). This is an easy and inexpensive DIY job that can save hundreds of dollars. Why replace your blinds and not fix the cord. Example: the 3 foot cord means, the cord measures 72" then when formed into a loop it will drop down 36" when installed onto the blind. 100% True Choice satisfaction guarantee. If you are not satisfied fpr any reason simply return them for a full refund.