Available in various sizes The actual blind size will be ½ inch smaller in width to allow for mounting space inside the window frame Durable vinyl material. Easy installation, clean and care for. 1" (2. 5 cm) slats allow for light control Hardware provided for easy installation inside or outside the window frame. Instructions for installation are included. Come in a variety of sizes to accommodate just about any window in any room. For Customer Support, please contact us at customerservices@allstrongusa.com or call 1-844-318-6168, Monday through Friday from 8:00 a.m. to 4:30 p.m. EST.