Expandable structured wiring box

A device ( 100 ) for receiving electrical components and wiring and adapted for mounting between adjacent studs of a wall structure, the device ( 100 ) includes means forming a composite chamber and having a box ( 100 ) with parallel, spaced apart right and left side panels ( 102, 103 ) for attachment to studs and spaced apart top and bottom panels ( 104, 105 ) having ends joined to ends of the right and left panels ( 102, 103 ) and arranged so as to form a housing chamber ( 112 ) at least partially forming the composite chamber. At least one framework ( 225 ) is movable between a first position within the composite chamber and a second position outside the composite chamber, the one framework ( 225 ) being shaped and arranged to receive electrical components.