The biohort highline range of sheds are made from top quality hot dipped galvanized steel with a multi layer coating for extra protection the highline h4 dark grey features an all round skylight below the roofline tough perspex glazing allows light into the shed from all angles to provide plenty of light the doors are designed to fit onto any of the walls and are complimented by a gas assisted spring damper and a 3 point locking mechanism simple and straightforward to install with full ins