Decorative Curtains, Opaque Window Curtains, Blackout Curtains, Curtain Panels Rod Pocket: the tunnel at the top of the curtain allowing it to be placed directly over the curtain rod, no clips or hooks needed. Tape: stiffening tape sewn at the top of the curtain allows the curtain to be hung in three ways, using a tunnel, clips, and hooks. Grommet: silver, gold, or black plastic eyelets on the top of the curtain panel. The inside diameter of eyelets is 1.38 inches (3.5cm)