Greyish white thermal insulated curtain liners

Last updated 2026-09-08

Transform your existing window treatments into full blackout solutions with these greyish white curtain liners. Designed to be hung behind your current drapes using the included hooks, these liners provide an invisible layer of protection against light and temperature transfer without changing your room's decor.

The thermal insulation properties of these liners are exceptional, helping to trap heat during the winter and reflect it during the summer. This makes them a practical investment for improving the energy efficiency of older windows while significantly increasing the privacy of any room in the house.

Measuring 77 inches in height, these liners are specifically sized to fit behind standard 84-inch curtains, ensuring they remain hidden from view. The greyish white fabric is neutral enough to not clash with the color of your primary drapes when viewed from the exterior of the home.

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