Abstract: A tool for patterning an overlay for placement about a projection structure extending from a mount surface may be temporarily positioned for patterning the overlay in situ. The tool may be configured for engagement with the projection structure, and include a cutting edge that is arranged into a pattern emulating a perimeter of the projection structure. Application of the overlay against the cutting edge of the tool cuts a relief portion from the overlay in situ to obtain an opening having a boundary that is shaped to closely accommodate the projection structure perimeter. The tool is then removed and the overlay applied against the mount surface in surrounding relationship to the projection structure extending from the mount surface.

Abstract: An acoustical panel apparatus includes a laminate panel substrate that is receptive to ink printing operations. The substrate may be provided with folding grooves to form an apertured base, a sidewall, and an inner wall which together define a receptacle. An acoustical tuning body is positionable at the receptacle to attenuate at least one of sound transmissions and sound reflections from sound passing through the apertures in the base. A mounting bracket is attached to the panel to secure the acoustical tuning body at the receptacle and for mounting the panel substrate to a wall or ceiling.