WdFour Classroom Door Window Cover,Blackout Shades for Windows and Doors，Privacy,Room Darkening Design Blocks Views, Cover Lockdown. 18W x 42L Inches, 1 Panel, Black.

Accurate Measuring is Critical: Before ordering, measure your classroom window carefully. Add 3 inches to your glass width and 3 inches to your length before choosing your size to ensure a proper fit and complete coverage Package Content and Material: Made of high quality 100% blackout polyester fabric and sold as one piece panel. These room darkening blackout window curtains are available in multiple colors suitable for classrooms, French doors, patios, living rooms, kitchens and home offices Easy Installation Process: No tools, hardware, mounting brackets, or drilling 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 and Privacy Protection: These soft and durable door window coverings are made with innovative triple weaving technology, which ensures 100% blackout ability to completely block out the classroom and effectively ensure the safety and security of everyone. These shades are safer options than blackout paper shades or blackout blinds for windows Care Instructions and Maintenance: Minimal care needed. Machine wash cold on delicate cycle with mild detergent. Do not bleach. Not easy to fade. Tumble dry low. Cool iron to remove potential wrinkles from the packaging Light Blocking and UV Protection: Excellent at keeping out full sunlight and preventing 100% of UV rays, providing complete darkness for enhanced security and privacy in classrooms, front doors, patio doors, front porches, and living rooms or bedrooms