Marley 23″ Black ‘Autodor’ Spring
A spring to suit certain models in the Marley Autodor and MG ranges of doors. The spring is identified by its colour (black), hooks at each end as opposed to inserts and its length over coils.
The length over coils is 584mm (23″)
When replacing garage springs, it is recommended to replace both springs at the same time, to ensure the spring tension and door remain balanced.