If you're looking to block out as much light as possible with room darkening or blackout curtains then you're going to love this double curtain rod. It's innovative wrap-around design helps prevent light leakage by allowing your curtain or drapery panel to rest flush against the wall in effect, sealing out the light. Simply wrap the panel around the curved end of the rod and tuck it behind the bracket to virtually eliminate all outside light. • Mounting hardware included and easy to follow instructions. • Save on Energy Costs • Adjustable length to fit your window and blocks outside light • Reduce outside noise • 42-120" telescoping rod