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An housing is configured for connection to the raceway panels by removing the concrete above the raceway panel, cutting a hole in the raceway panel, and securing the housing in the hole in the raceway panel. Alignment clips allow the afterset housings to be ganged together to form an integral afters

An housing is configured for connection to the raceway panels by removing the concrete above the raceway panel, cutting a hole in the raceway panel, and securing the housing in the hole in the raceway panel. Alignment clips allow the afterset housings to be ganged together to form an integral afterset assembly. Each alignment clip is configured to slidably engage with a pair of the afterset housings. In one embodiment, the afterset housing includes a preset housing that is normally configured for connection to the raceway panel prior to pouring of the concrete floor, and an adapter connectable to the preset housing and being constructed to reconfigure the preset for use as an afterset housing which is adapted for connection to the raceway panel following pouring of the concrete floor.

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[ What is claimed is:] [18.]18. An underfloor electrical distribution system for placement in a concrete floor comprising:a pair of raceway panels adapted to be positioned on a subfloor prior to pouring of the concrete floor, each raceway panel defining an interior passage and a plurality of preset

[ What is claimed is:] [18.]18. An underfloor electrical distribution system for placement in a concrete floor comprising:a pair of raceway panels adapted to be positioned on a subfloor prior to pouring of the concrete floor, each raceway panel defining an interior passage and a plurality of preset openings that provide access to the interior passage;a plurality of preset housings mountable in the preset openings and to provide access to the interior passage of said pair of raceway panels from an upper surface of the concrete floor; anda plurality of alignment clips, each alignment clip being adapted to secure and align a preset housing carried by a first of the raceway panels with a second preset housing carried by a second of the raceway panels.