Abstract: A cab system with a cab, a roll over protection structure (ROPS), and a pair of actuators, is provided. The cab includes a ceiling portion, a base portion, and at least one collapsible column. The at least one collapsible column includes an upper arm connected to the ceiling portion and a lower arm connected to the base portion. The actuating cylinder actuates to maintain the cab between a first pre-determined height and a second pre-determined height, via slidable actuation of the upper arm. The ROPS includes a canopy to cover the cab, which is secured between a pair of telescopic support members. The telescopic support member includes a movable column with a canopy end attached to the canopy and a fixed column with a frame end connected to the frame. The actuator moves the movable column to adjust the canopy between a first pre-determined distance and a second pre-determined distance.