The Sun Zero Sheridan Magnetic Closure 100% Blackout Grommet Curtain Panel Pair provides the ultimate in light blocking technology coupled with magnetic closures to keep out even the harshest of light while adding energy efficiency to any room of your home. Sun Zero Total Blackout technology is laboratory-tested to block out 100% of light, reduce outside noise by up to 45%, and decrease energy lost through your windows by up to 50%. Comfort is optimized with thermal insulation that helps keep summer heat and winter chill out of your home. These curtains are equipped with built-in metal grommets for easy hanging on standard curtain rods up to 1.5 inches in diameter. Hang in your entertainment room to eliminate screen glare and reduce distracting outside noise, or in your bedroom for enhanced privacy and better, uninterrupted sleep.