To draw a rectangular grid by specifying properties:
Select the Rectangular Grid tool .
Click in the artboard to set the grid's reference point and display the Rectangular Grid Tool Options dialog box.
Set any of the following options in the dialog box, and click OK:
Click a square on the reference point locator () to determine the point from which the grid is drawn.
Width to specify the width of the entire grid.
Height to specify the height of the entire grid.
Number (Horizontal Dividers) to specify the number of horizontal dividers you want to appear between the top and bottom of the grid. Then enter a Skew value to determine how the horizontal dividers are weighted to the left or right side.
Number (Vertical Dividers) to specify the number of dividers you want to appear between the left and right sides of the grid. Then enter a Skew value to determine how the vertical dividers are weighted toward the top or bottom of the grid.
Use Outside Rectangle As Frame to replace the top, bottom, left, and right segments with a separate rectangular object.
Fill Grid to fill the grid with the current fill color (otherwise, the fill is set to none).
