3.25 wide each package contains 12 strips (each 37 long) for a total of 37 feet Use Eureka School Extra Wide Deco Trim ? to add a finishing border to your displays windows doorways or chalkboards. Vibrant colors plus a variety of styles and themes can add creativity to displays windows chalkboards and more.12 strips per package each measure 3 1/4 x 12 for a total of 37 feet!