IMPROVEMENTS TO LOUVRE WINDOWS

摘要

window louvre blade which is rectangular when viewed in plan and which like known louvre blades, has an upper and a lower longitudinal side edge, two end edges, a planar outer face which when the louvre blade is closed faces the outside and a planar inner face which faces the inside. The upper longitudinal side edge is ramped 17 upwardly from the inner face to the outer face with ramp 17 being planar and extending across the edge of the louvre from the inner face to the outer face.