Sun Zero Clea Geometric Print Energy Efficient Grommet Curtain Panel, 40" x 63", Gray Modern triangle print design adds dimension Room Darkening technology blocks out some unwanted light while enhancing privacy Energy efficient design reduces energy lost through your windows by up to 25% Thermal properties help keep summer heat and winter chill out of your home Noise reduction up to 25% helps you get a sounder, more uninterrupted sleep Built-in metal grommets fit curtain rods up to 1.5" in diameter