This Riley Solid Blackout Thermal Grommet Single Curtain Panel adds a bright, fun pop of color to any room of your home. Equipped with built-in metal grommets for easy hanging on standard curtain rods up to 1.5" in diameter. Blackout technology blocks out most outside light and decreases energy lost through your windows by up to 40%. Comfort is optimized with thermal properties that help keep summer heat and winter chill out of the room.