WdFour Classroom Door Window Cover,Blackout Shades for Windows and Doors，Privacy,Room Darkening Design Blocks Views, Cover Lockdown. (Black, 10W * 42L, 1 Panel)

Important: Accurate measurement is essential to get the right size for your class window. Before ordering, please measure your window: it is preferable to add 3 inches to the width of your window and 3 inches in length before choosing your size to ensure a good fit. Package contents: Made of high quality 100% blackout polyester fabric and sold as one piece. These blackout window curtains are available in multiple colors suitable for classrooms, patio doors, terrace, living room, kitchen, and home offices. EASY TO USE - Unlike many window blinds and blackout curtains, no tools, hardware, mounting brackets or drilling are required. Strong adhesive tabs hold the shade in place. Just detach the Velcro strap at the top so the blind can lower over the window and press the bottom of the blind into place to completely block out external views. Blackout effect and privacy protection: These soft and durable door and window coverings are made with innovative triple weave technology, which can guarantee a 100% blackout capacity, but it is crucial that they completely block out the classroom to effectively ensure everyone's safety. Our blinds are a much safer choice than blackout paper blinds or blackout Venetian blinds. Care instructions: Very low maintenance required. Machine wash cold on gentle cycle with mild detergent. Do not bleach. Does not fade easily. Tumble dry on low heat. Cool iron to remove potential creases when out of the package.