Blackout technology blocks out most 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 Sun Zero Hayden Curtain Panels infuse a modern sophistication into any living space. Equipped with built-in metal grommets for easy hanging on standard curtain rods up to 1.5" in diameter. Sun Zero Blackout technology blocks out most outside light, offers outside noise reduction by up to 25%, and decreases energy lost through your windows by up to 25%. Comfort is optimized with thermal properties that help keep summer heat and winter chill out of your home. Hang in your living room for enhanced privacy, or in your bedroom for a sounder, more uninterrupted sleep.