A shelf support for leveling a shelf of a laboratory climatic cabinet is provided. The shelf support includes a shelf support body configured to be secured to a wall of the laboratory climatic cabinet and to support the shelf and at least one shelf leveling mechanism associated with the shelf support body. When the shelf is supported by the shelf support, the at least one shelf leveling mechanism is configured to adjust a distance between the shelf and a floor of the laboratory climatic cabinet. A laboratory climatic cabinet is provided and includes a shelf support, which includes a shelf support body configured to support the shelf and a shelf leveling mechanism, secured to a first wall of the cabinet. When a shelf is supported by the shelf support, the shelf leveling mechanism is configured to adjust a distance between the shelf and a floor of the cabinet.