Abstract: A frame assembly for supporting and mounting a box compartment over and around a flat bed of a flatbed tow truck is described. The frame assembly includes a frame attached to a chassis of a flatbed tow truck. The frame includes at least one left and at least one right side support beams, at least one left and at least one right horizontal connection beams, two or more left side and two or more right side vertical support beams, at least two cross-beams, and at least one vertical connection beam. One or more of the at least two cross-beams is connected to the chassis and is further connected at each of its ends to the left and right side support beams. Each vertical connection beam is connected to either the left or right horizontal connection beam and is oriented generally vertically for attachment of a box compartment to the frame.

Abstract: A frame assembly for supporting and mounting a box compartment over and around a flat bed of a flatbed tow truck is described. The frame assembly includes a frame attached to a chassis of a flatbed tow truck. The frame includes at least one left and at least one right side support beams, at least one left and at least one right horizontal connection beams, two or more left side and two or more right side vertical support beams, at least two cross-beams, and at least one vertical connection beam. One or more of the at least two cross-beams is connected to the chassis and is further connected at each of its ends to the left and right side support beams. Each vertical connection beam is connected to either the left or right horizontal connection beam and is oriented generally vertically for attachment of a box compartment to the frame.

Abstract: An assembly is described for connecting a step or other components to a tow truck or other commercial truck using a sub-frame. The sub-frame includes chassis connection elements that are attached to a chassis of the truck and support elements that extend perpendicularly away from the chassis toward left and right sides of the truck so that the step, a toolbox, or other components may be attached thereto. The step is installed at a height that allows access by a user standing thereon to a bed of the truck and to any items located on the truck bed. The assembly may also include a rear bracket assembly for attaching rear fenders to the truck.

Abstract: A frame assembly for supporting and mounting a box compartment over and around a flat bed of a flatbed tow truck is described. The frame assembly includes a frame attached to a chassis of a flatbed tow truck. The frame includes at least one left and at least one right side support beams, at least one left and at least one right horizontal connection beams, two or more left side and two or more right side vertical support beams, at least two cross-beams, and at least one vertical connection beam. One or more of the at least two cross-beams is connected to the chassis and is further connected at each of its ends to the left and right side support beams. Each vertical connection beam is connected to either the left or right horizontal connection beam and is oriented generally vertically for attachment of a box compartment to the frame.

Abstract: An assembly is described for connecting a step to a tow truck or other commercial truck using a sub-frame. The step is installed at a height that allows access by a user standing thereon to a bed of the truck and to any items located on the truck bed. The assembly also can feature a tool box installed on the sub-frame at a side of the tow truck. Left and right versions of the assembly can be made for installation on left and right sides of the truck, respectively.