These light tension Stability Chair Springs are made exclusively for Merrithew™ Stability Chairs. Each is nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension throughout its life through demanding studio use. Sold as a pair.

Merrithew™ springs are built to withstand vigorous use in professional or commercial environments.  To maintain performance and warranty, springs require replacement every two years.

Spring Resistance Details

Overall length of the spring is 17.750” with an initial tension of 6.688 lbs (load required to open the coils without extension)

Spring rate of 3.888 lb/inch (load required to extend spring every inch after the initial tension is applied)

Dimensions

• Length  45.72 cm
• Coil Diameter  30 mm

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