WdFour Classroom Door Window Cover,Blackout Shades for Classroom Windows and Doors，Privacy,Room Darkening Design Blocks Views, Classroom Window Cover Lockdown.12W x 40L Inches, 1 Panel, Stone Blue.

Important: Measuring accurately is critical to get the correct size for your classroom window. Before you order,please measure the window,It is better to add 3" to your glass width and 3" to your length before choosing your size to ensure a proper fit. Package Content: Made of high quality 100% Blackout polyester fabric and sold as one piece of panel. This room darkening blackout window curtains are available more colors that suitable for more classroom,French door, patio, living room, kitchen and home office. Easy To Use: Unlike many window blinds and blackout curtains, no tools, hardware, mounting brackets, or drilling is required. Strong adhesive tabs hold the shade in place. Simply release the Velcro strap at the top so the shade drops over the window and press bottom of shade in place to completely block the intruder’s view. Blackout & Privacy : These soft and durable door window coverings are made of innovative triple weaving technology, which can ensure 100% blackout ability,but it is crucial that it completely blacks out the classroom to effectively ensure the safety and security of everyone. Our shades are much safer options than blackout paper shades or blackout blinds for windows. Care Instructions:Minimal care needed.Machine Wash Cold, delicate cycle with mild detergent. Do not bleach. Not easy to fade. Tumble Dry Low. Cool iron to remove potential wrinkles from the packaging.