Wessex pattern black garage door spring to suit Wessex and Ellard pre 1998 retractable garage doors, including Wessex GRP doors, Ellard steel garage doors, GRP and timber garage doors as well as some Statemore doors. Available in multiple sizes the spring you need can be identified by its colour, its length over coils and number of coils:

Black spring: with a length over coils of 20" (508mm) and 93 coils.
Grey spring: with a length over coils of 19.5" (495mm) and 77 coils.
Blue spring: with a length over coils of 21" (533mm) and 72 coils.
Brown spring with a length over coils of 20" (508mm) and 60 coils.
Yellow spring: with a length over coils of 18" (457mm) and 53 coils.