EASY TO INSTALL: 2 curtain panels per package. Each lined blackout curtain measures 42 inches wide by 63 inches long, with 6 grommets ( 1.6 inch inner diameter ) on top, fits most curtain rods. MAXIMUM BLACKOUT: with black lining backing, our 100% light blocking curtains are thick enough to completely block out sunlight and UV ray. These room darkening curtains provide you a real dark environment to sleep even during bright sunny day. Protect your indoor privacy. SOUND PROOF: our heavyweight double layer curtains panels are effective on absorbing sound 2 times than ordinary 1-layer curtains, to protect you from disturbing by outside neighbor or traffic noise. MACHINE WASHABLE: these durable black out drapes are thick, soft, and easy to care. Wash in the cold water below 86F. Iron and tumble dry at low heat as needed. Do not bleach. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.