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It is always recommended to replace springs in pairs
Easy installation when fitted in conjunction with the comprehensive instructions
These are for the earlier type Mk3c & S/S doors with the longer spindles
Foam backing pad
Henderson Dolphin YELLOW Garage Door Spring automation It is always recommended toWhen replacing garage springs, it is recommended to replace both springs at the same time, to ensure the spring tension and door remain balanced Henderson Dolphin YELLOW Spring used on small, single garage doors. The original Henderson part number is 028570 Henderson Dolphin springs were all manufactured to the same dimensions, but using a different grade of metal to achieve the difference in spring strength. Usually the Dolphin springs were