These light tension 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.
Note: this item is for use with Merrithew™/STOTT PILATES® equipment only
- Our 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 18 in with an initial tension of 14.75 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)
|Push-Thru Spring / Stability Chair · Light Spring||5.5–7.5 lbs
1.157 lbs/in +/- 10%
(.2 N/mm +/- 10%)
Warranty - 2 years all springs