Product details Our LUCKUP zebra blinds are made of polyester fabric, safe and non-toxic, ventilation and heat insulation, energy saving and environmental protection. The zebra curtain can manually adjust the light to isolate the outside sight and protect privacy. The design of the chain connector protects children and pets from being entangled by the drawstring. The size of blind is 33.5" x 90" and color is white. Our products are produced under strict requirements. Internal installation: You need to measure the height, width and depth of the window. The depth of the windows with internal zebra blinds is at least 2.5 inches. At the same time, the width of the blind is at least 1/4 inch smaller than the width of the window. There will be a tiny gap on each side, so the fabric width must be at least 1.5 inches smaller. External installation: External installation requires lower requirements than internal installation. The louver width needs to be 3-6 inches wider than the window width to avoid gaps. And the length of the blinds needs to be at least 6 inches longer than the length of the window to ensure that the entire window is covered