Removal of existing roof vents and control system, and replace with new. Due to the poor state of the existing vents and their installation system Smoke Control Systems came up with a vent design and installation not only reducing the installation costs but 50% but also did not effect any of the existing glazing system seals. This was a very time critical job with the first vents being delivered to site and fitted within 3 weeks of receipt of order. Working closely with Fanhear sta all work was carried out, out of hours thus not affecting footfall for the centre.