Henderson Ultra 150 Mk2 garage door spring – replaces Ultra 140 Mk 2. Suits Ultra 140 & 150 Mk2, double Dolphin doors over 14’6″ to 16′ wide, Classic 1470, Single skin GRP 7066/7070 doors.
Wire Diameter 7mm
Number of Coils 62
Overall Diameter 53mm
Length Excluding Hooks 422mm
When replacing garage springs, it is recommended to replace both springs at the same time, to ensure the spring tension and door remain balanced.
