The Superior Liner blackout curtain lining, by Thermaplus and Commonwealth Home Fashions, is an energy efficient attachment for your existing curtain panels. For use with grommet top, rod pocket, pinch pleat, or tab top curtains. These curtain liners help to reduce noise, retain heat, and block light to create a more comfortable environment in the home. Ready to install, the curtain liner features 1.5″ brass rings to hang with grommet curtains, ties for tab curtains, and a fringe loop for pinch pleats, and is sized to fit standard curtain lengths to ensure a clean look and optimal coverage. These are designed to meet white backing window requirements that are common in condo communities and other living facilities. Available in 56″ (fits 63″ length), 77″ (fits 84″ length), and 88″ (fits 95″ length) lengths. All liners are 45″ wide.