Abstract: A mounting assembly for mounting a panel, such as a shutter, adjacent and in parallel, spaced relation to a window set into a window frame that has first and second opposing walls includes a biased mount and a fixed mount attached to the panel in opposing relation to one another. The biased mount has a body fixedly attached to a surface of the panel at about an edge thereof. A reciprocating biasing assembly is carried by the body and includes a shaft operably connected to the body by a biasing element. The shaft has a first engaging element mounted to an end thereof that is movable away from and toward a selected one of the first and second walls of the window frame. The biasing assembly biases the engaging element toward the selected wall. The fixed mount has a body fixedly attached to the surface of the panel in opposing, spaced relation to the biased mount.