The VELUX duo blackout blind is attached to a top casing and runs in side rails that ensure smooth operation and stepless positioning in the window.
The duo blackout blind has two control bars that can be adjusted independently – even though the two cloths are attached to one another: the first control bar is placed between the two cloths, the other at the bottom of the pleated cloth. This makes it easy to control how much of the incoming light to block out, how much to diffuse, and how much natural light to let into the room. Simply use the control bars to raise or lower as you please.
To ease the operation of a manually operated blind, you can also purchase rod controls, rod extension pieces and rod adapters.