Creates 3D boxes:
 Classic: box is drawn from a 3D polyface mesh.
 Shape, Pro and Platinum: box is drawn as a 3D solid.
Accessing the Command
command bar: box
menu bar: Model  3D Solids  Box
toolbar: 3D Solids 
ribbon: Solid  Create  Primitive  Box
: box
Prompts you in the command bar; in the Classic version, the prompts follow those of the Ai_Box command:
Set corner of box or [Center] <0.00,0.00,0.00>: (Pick a point, or enter an option)
Set opposite corner or [Cube/Length)]: (Pick another point, or enter an option)
Height of box [2Point]: (Pick two points, or enter a height)
If Dynamic Dimensions are active, you can enter the dimensions in the dynamic dimensions entry fields, as illustrated below.
Command Options
Option 
Description 
Corner of box 
Specifies one corner of the box's base. Enter x,y,z coordinates or pick a point in the drawing. Press Enter to reuse the previouslyentered coordinates. 
Center 
Specifies the center of the box's base; prompts you: Center <1,2,3>  (Enter x,y,z coordinates, pick a point in the drawing, ore press Enter to accept the previouslyused coordinates.) 
Cube 
Specifies a box with three sides of equal length; prompts you: Length of sides of cube <6>  (enter a length, or pick two points, or press Enter to accept the previouslyused length.) The command ends at this point, drawing the cube box. 
Length of side 
Specifies the length of each side:
You may enter negative values to draw the box in the downward directions. 
Set opposite corner 
Specifies the opposite corner of the box's base; enter x,y,z coordinates or pick a point in the drawing 
Height of box 
Specifies the height of the box; enter an option:

Grips Editing
Boxes can be edited directly through grips:

Select the box. Notice that it has many grips.

Drag any grip to move the box. (All eight grips perform the same function: move.)
Related Commands
Cone  creates 3D cones as solid models.
Cylinder  creates 3D cylinders as solid models.
Extrude  extrudes 2D entities into 3D solid models.
Interfere  creates 3D volumes of intersecting 3D solid models.
Intersect  removes volumes not in common between two solid models.
MassProp  reports the mass properties of 3D solid models and 2D regions.
Pyramid  creates a pyramid as a 3D solid (Pro and Platinum). Creates a pyramid as a polyface mesh (Classic)
Revolve  revolves 2D entities into 3D solid models.
Section  creates 2D regions from 3D models.
Slice  cuts 3D solids into two parts.
SolidEdit  edits the bodies, faces, and edges of 3D models.
Sphere  creates 3D balls as solid models.
Subtract  removes one solid model from a second.
Torus  creates 3D donuts as solid models.
Union  joins two or more solid models into a single entity.
Wedge  creates 3D wedges as solid models.