This collection by Thermaplus is the ultimate choice in liners for easily converting your existing curtains into 100% total blackout ones. The curtain liner contains multiple bonded layers of foam that create a hotel quality 100% true, total blackout environment. It provides absolute privacy, heating and cooling cost-cutting benefits, as well as sound dampening. The liner is compatible with all types of curtain heading styles measuring 40" to 54" wide. The liner's length best fits a curtain up to an 108-inch length. Made from quality materials that are long-lasting and easy to clean.