Many blackout linings come with built-in hanging hooks or ready-to-hang rings that can easily be slid onto the curtain rod for convenient installation. You’ll want to place the liner rings in an alternate fashion with the curtain rings. Other liners may have a slightly more complex process and require inserting the lining hooks into the lining tape and then curtain tape. Certain linings may even require sewing. You’ll want to ensure you’re aware about the installation process for your blackout lining before making a purchase.