There is provided a low bay lighting apparatus secured to an elevated horizontal surface. The low bay lighting apparatus including a light fixture and a mounting bracket to which the light fixture is to be removable attached. The light fixture includes a plurality of posts disposed on opposite ends of opposing outer side surfaces of the light fixture. The mounting bracket includes a plurality of slots configured to mate respectively with the plurality of posts to removably secure the light fixture to the mounting bracket. When being serviced, the light fixture is configured to freely hang from a first set of slots.