Duraframe Magnetic Frame is a simple, stylish yet efficient way to organize, display and update important information that's displayed on internal glass surfaces exposed to light. Lightfast, adhesion-resistant design prevents it from bleaching in direct sunlight. Easy-to-use, reusable design attaches instantly to glass without bubbles and removes without leaving any residue. See-through material keeps your information visible from both sides when it's been applied to glass. Frame is head-resistant up to 158 degrees Fahrenheit. Frame is designed for letter-size inserts.