Room darkening poles may also help to increase insulation, by reducing any draught coming from the window sides'. '.strtoupper('i')deal for ensuring a great night's sleep, this innovative curtain pole features a curved design to maximise light block at the sides of your window by returning curtains to the wall'. '.strtoupper('t')his specially designed pole is ideally used with blackout eyelet curtains to ensure optimal results'. '.strtoupper('t')here is a screw to fix the last eyelet ring of the curtain in place, allowing curtain to sit as close to the backplate as possible preventing, light from filtering through'. '.strtoupper('s')tyled in a choice of sophisticated finishes, this curtain pole is available in a range of sizes to suit your requirements.disclaimer this pole can be cut to size.