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!
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Horizontal Blind
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Vertical Blind
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Cellular / Honeycomb / Pleated Shade
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RV Day / Night Shade
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Vertical Cellular Shade
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Roman / Woven Wood Shade
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Cloth Tape & String Ladder
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 side-stack blind is:
Width + (3 x Height)
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
For a Center Stack blind, use the formula below:
Width + (4 x Height)
For a Split Stack blind, use the formula below:
Width + (6 x Height)