An image forming apparatus includes an image forming unit. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb3MSFmil, a relatively high caliper ranging from about 24 to about 35 mil, and an internal bond strength of at least about 80103 ft-lbf. The first and second layers are constructed of a slingable material. The equipment can stand on its end a load which is at a greater height when standing on end than when it is positioned on the equipment. In several exemplary embodiments, the user interface may be associated with a commercial airline environment.