Roll-over protective structure (ROPS)-certified cabs come standard on the company’s mid-range-size hydraulic excavators. Models DX140LC through DX480LC will feature the pressurized cabs that conform to ISO 12117-2: 2008. Controls stands are integrated into the seat assembly and the switch panel into the right-hand control stand. Other features include improved, optional heated air-suspension seat, an upgraded monitor panel with automatic day/night mode, and rear view camera. An easier opening front window and improved storage boxes are other enhancements. Doosan Infracore Construction Equipment America. 800-743-4340.