Maximum Energy Saving & Light Blocking Fabric with Grosgrain Ribbon Accent Patented cordless design for smooth and precise adjustment. Easy installation, inside or outside the window frame. Window depth of 2" is required for inside mount Child and Pet Safe Our blackout thermal roman shade with grosgrain ribbon border will add a clean and refined look to your dwelling. Deluxe cordless mechanism provides simple and precise height adjustment. Easy mounting inside or outside the window frame. Child and pet safe.