Pattern Mk2 Ultra 150 Spring / Bolt spring to suit Henderson

DescriptionA spring to suit Henderson Ultra 140 and 150 Mk2 geared doors, as fitted to many custom built panels. Also found on double Dolphin doors over 4420mm (14` 6″) wide, single Consort GRP doors and 4267 x 2134mm (14` x 7`) Henderson Classic doors. These springs are easily identified either by size or by the adjuster bolt, which is a hook type bolt as opposed to a hexagonal headed bolt. The spring has 62 coils with a length over coils of 422mm (16 5/8″) and an outside diameter of 54mm (2 1/8″). Downloads Reviews