Black out roller blind SRF allows you to achieve complete darkness even in the sunniest room. Aluminum rails covering the edges of the blind, a special seal in the bottom aluminum strip, as well as a special material covering the blind stop the light completely and reduce heat flow both in winter and in summer. The side rails allow you to stop the blind in any position. It is manually or electric operated. The SRF blackout blind is a stylish, decorative blind with runners at the sides to allow the blind to be positioned anywhere up the window. It also prevents daylight entering at the sides, to provide a complete blackout. The aluminum runners which cover the fabric edge, the special seal in the lower aluminum slat and the material covering the outer face of the fabric (reflecting the sunrays) block incoming light completely, reducing incoming heat in summer and preventing heat loss in winter. The fabric also protects against harmful UV radiation. The SRF blackout blind can be installed in all types of skylights and roof window. SRF blackout blind is available in four versions: