Henderson replica counterbalance spring for the Dolphin Range, this spring is for the "Green"version and measures 21.5" over coils, with a diameter of 1.5" and has 98 coils (wire diameter 6.25mm)

Suitable for the following Henderson Doors- Doric single retractable 8'0 to 9'0 wide,Dolphin double doors 12'6 to 14'6 wide.