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.