Window roller blind cassette fabricated from two L-shaped overlapping hollow plastic profiles with mitred corners

摘要

A window roller blind is in a cassette which is fixed to the overhead window aperture brickwork. The cassette is essentially a U-shaped structure (2, 3, 4) open at the lower side, formed by two overlapping L-shaped structures bonded together at the top. The cassette sidewalls are essentially hollow plastic panels with esp. mitred ends.