Description

A pattern spring to suit Henderson single Dolphin doors 2134 x 1981mm (7` x 6` 6″)  to 2743 x 2134mm (8` x 7`), double Dolphin 3048mm (10`) to 3810mm (12` 6″) wide. Ultra 100 gear, some pre- Premiere single Merlin, Doric, Regent, Sovereign, Warwick, Lincoln and Gloucester tracked doors. These springs are easily identified either by size or their colour.

The spring has 99 coils with a length over coils of 533mm (21″) and an outside diameter of 38mm (1 1/2″).