Guardian has been in the glass business for nearly 80 years - yet some of our most technologically-advanced products were just introduced. Our tradition of excellence includes innovation and vision, a process that has continued to accelerate since we opened our first float glass plant in Carleton, Michigan in 1970. Over the years, we've expanded our manufacturing capabilities and now serve every major market in the world. We are global yet local, around the corner and around the world. We have a glass solution for your needs from a convenient location.