According to one embodiment, a flood vent includes a frame, a door, and at least one connector. The frame forms a fluid passageway through an opening in a structure. Furthermore, the frame extends into the opening in the structure in a first direction. The door is pivotally mounted to the frame in the fluid passageway, and allows a fluid to flow through the fluid passageway. The at least one connector is positioned between an outer perimeter of the frame and an inner perimeter of the opening. Furthermore, each of the at least one connector is configured to apply pressure to the inner perimeter of the opening in a second direction that is at least generally orthogonal to the first direction.