What are blackout blinds? Blackout blinds are designed in order to stop light. One of the most effective routes to preventing light from entering or exiting a room is via blackout curtains. The most effective blackout blinds tend to be blackout roller blinds or cassette roller blinds, whereby a metal frame will prevent any light entering above, below or either side of the blackout roller blind. Blackout blinds will often have a coating on the rear of the fabric in order to reduce or prevent light penetration. Albeit that it is possible to purchase Venetian blackout blinds and vertical blackout blinds, both inherently have structural slots that allow light to pass through the interior and exterior. Choose Blackout Blinds for your home ,you will know how about it. Blackout blinds with 250cm widthwidth Features: Material:100% Top Grade Polyester material Width:2.0m,2.5m Colors:More than 7colors and custom made Color Fastness to light: Class 5 Flammability: Class 1 Roll Length: 30m Packing:35m rolled into a standard carboard tube. Payment Terms: TT advance Minimum Qty:600m per color. Lead time: 30days