Abstract: A method and apparatus for marking places for installation of fasteners. An object to be mounted on a mounting surface has a receptacle on the back thereof for receiving a fastener. This receptacle has at least a portion thereof which is generally T-shaped in cross-section. The receptacle has a first pair of walls extending from the back, this first pair of walls are spaced apart by a first distance. A second pair of walls in the receptacle are spaced farther from the back than the first pair of walls and are a second distance apart, the second distance being greater than the first distance. The marking device, which is generally T-shaped, has a stem portion disposed along a first axis. The stem portion is narrower than the first distance of the receptacle and a head portion of the marking device is sized to fit in the receptacle between the second pair of walls of the receptacle.

Abstract: Trim molding for use around windows, doors, the base of walls and wall-ceiling interfaces is constructed so that it may be installed without the use of fasteners nailed through the outside face of the trim molding. Receptacles are formed in the back side of the trim molding in the shape of a T-slot for receivable and slidably engaging an enlarged connector head previously inserted into the mounting surface. The back surface of the T-slot receptacle is beveled thereby creating a wedge which engages the enlarged connector head securing the trim against the mounting surface. The trim molding is easily removable when it is desired to repaint, wallpaper, or install a different flooring material, thereby eliminating the need to work around the trim molding or having to mask or tape the trim when preparing to paint.