Double curtains create a well-designed and practical finish with combination of our blackout and sheer curtains together on the one window. Two separate curtain tracks are installed for two curtains and you have a choice of layering sheer at front or the blackout to suit your interior. Both curtains have separate control. Open the blackout curtain during the day and keep the sheer curtain closed for daytime privacy and for diffused light. Close the heavier curtain whenever you need maximum darkness, thermal protection, noise reduction and privacy at night.