Set of 2 Thermal insulation sheet for windows that attaches to the curtain rail to prevent cold air from entering from the window. Simply attach to the runners of the curtain rail for standard-height windows, with two sheets included. Prevents cold air from entering from the window and reduces the temperature drop in the room. Economical as it improves heating efficiency. Save energy and electricity by using eco-friendly goods effectively! The semi-transparent material prevents the room from becoming too dark. Easy to install because you can use the existing curtain rail. Includes S-hooks for installation. The bottom of the curtain can be freely cut with scissors to match the height of the window. Includes two sheets (for window widths of 1.5 to 2m). Accessories: S-hooks for installation. *Cannot be used where there is no curtain rail.