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Pattern Mk2 Ultra 150 Spring / Bolt spring to suit Henderson


A 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″).

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