A panel assembly includes a frame and a textile panel. The frame has a first member and a second member spaced apart from each other. The textile panel is attached to and extends between the first member and the second member. A tension controlling system is attached to the textile panel. The tension controlling system is reconfigurable between a first state for tensioning the textile panel to provide a first tensile force and a first maximum sag distance, and a second state for tensioning the textile panel to provide a second tensile force and a second maximum sag distance. The first tensile force is greater than the second tensile force, and the first maximum sag distance is less than the second maximum sag distance.