Polyester Product Size: 19.8"×24", adjustable length from 0 to 24". ?Due to the hardware at both ends, the width of the fabric is 1.8 inches smaller than the head width. Please read the picture to learn the light gap may happen on the window. No Drilling: Punch-free installation without damaging your door. 2 sets of different mounting accessories to meet your needs in different occasions. Easy to install in minutes with foam glue or brackets and screws. Great for Renter, Landlord, and Home Buyer. Cordless Blinds for Windows: The cord-free design provides a clean, tangle-free look to the window. Smooth and quiet glide spring system creates a safer environment for children and pets. Easy to raise up or lower down to gently filter sunlight and stay at whatever position you stop. Doors Blinds: Dual-layer fabric, provide privacy while filtering the sun light gently into the room, protect furniture and rugs from fading by blocking UV rays. Perfect solution for French door, closet door, sliding glass door, patio door, balcony door. If there are any quality problems or missing parts, please feel free to email us via Amazon message or send emails to CustomerService@coprisma.com and we will respond to you within 24 hours.