Henderson replica counterbalance spring for the Dolphin Range, this spring is for the "Yellow" version and measures 21" over coils with a diameter of 1.5" and has 99 coils (wire diameter 5.5mm)

Suitable for the following Henderson Doors- Bergen,Chevron & Classic Retractable Doors sizes 7'0 x 6'6 and 7'0 x 7'0