OptiPrint® dry erase magnets with a 1" x 1" dot grid are perfect for floor plans and writing guides. This is a large, dry erase friendly 30" x 45.25" heavy duty magnet with a gray dot grid printed on it. Now you can roll out your dot grid magnet to work on your next project. When the project is over simply roll it up and store it away. The printed magnet will stick to your magnetic whiteboard or chalkboard or to any other any smooth magnetic receptive surface. Not exactly what you want? We can customize these to suit your needs, call us today to get started.