Abstract: A modular frame for a cover for an in-ground chamber or pit, the modular frame comprising a plurality of frame sections securable relative to one another to form an external frame, at least some of the frame sections comprising an abutment wall to abut an upper portion of the in-ground chamber or pit, and a cover support structure to support a portion of one or more cover members relative thereto. Optionally, a depending structure to at least partially define an internal skirt configured to be received within the in-ground chamber or pit and/or an external upstand to at least partially define an opening into which the one or more cover members are locatable to at least partially close the opening may be provided. A cover including the modular frame and an in-ground chamber or pit including the cover are also provided.