An exterior cover (14) is provided to the upper rotation body (3) of a hydraulic shovel (1) in order to cover devices, such as an engine (8) and a heat exchanger (9), mounted on the upper rotation body (3). A left rear door cover (21) forming the exterior cover (14) comprises: a cover body (22) provided with openings (22C, 22D) and a grille (22E); a plate mounting front bracket (27) and a plate mounting rear bracket (28) which are secured to the inner surface (22F) of the cover body (22); and an air permeable plate (29) removably mounted to the brackets (27, 28). The configuration enables the air permeable plate (29) to be mounted in common to the cover body (22) of the left rear door cover (21) conforming to specifications for a subtropical climate and to the cover body (32) of a left rear door cover (31) conforming to specifications for a tropical climate.