Free Printable Imperial Quad Paper 1 square per 1.5 inches_1.5×1.5 grid_Letter Size Paper This free grid graph paper template has 1 square per 1.5 inches. The grids are 1.5×1.5 inch squares. They are larger than normal 1×1 grids which have 1 square per inch. If you are looking for the largest grid, this is the …