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How Much string do I need?

Click on the type of blind to see a diagram and a formula to help you calculate how much string you will need for your repair. Have a tape measure handy!

Lift Cord for Horizontal blinds

[(2 x Length) + Width] x Number of Lift Cords

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Vertical Blind


The amount of string needed for this blind is:

(Width x 2) + (Length of String Drop x 2) + 5 Feet

Cellular, Honeycomb, and Pleated Shades

Standard-Operating Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

Top-down Bottom-up Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

RV Day/Night Shade


The amount of string needed for this blind is:

[Length + (2.5 x Width)] x Number of Lift Cords

2-String Shade


3-String Shade


4-String Shade / 1 Spring


4-String Shade / 2 Springs


4-String Shade / 2 Springs / End

Vertical Cellular Shade


The amount of string needed for this blind is:

Length + Width + 5 Feet

Roman/Woven Wood Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

Cloth Tape & String ladder for horizontal blinds

(Length + 12 inches) x Strips of Ladder


Horizontal Blind

Horizontal Blind with Lift Cord

[(2 x Length) + Width] x Number of Lift Cords

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Vertical Blind

Vertical Blind


The amount of string needed for this blind is:

(Width x 2) + (Length of String Drop x 2) + 5 Feet

Cellular / Honeycomb / Pleated Shade

Cellular, Honeycomb, and Pleated Shades

Standard-Operating Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords


Top-down Bottom-up Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

RV Day / Night Shade

RV Day/Night Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

2-String Shade


3-String Shade


4-String Shade / 1 Spring


4-String Shade / 2 Springs


4-String Shade / 2 Springs / End

Vertical Cellular Shade

Vertical Cellular Shade


The amount of string needed for this blind is:

Length + Width + 5 Feet

Roman / Woven Wood Shade

Roman/Woven Wood Shade


The amount of string needed for this blind is:

[(2 x Length) + Width] x Number of Lift Cords

Cloth Tape & String Ladder

Horizontal Blind with Cloth Tape



The amount of string needed for this blind is:

(Length + 12 inches) x Strips of Cloth Tape