A box header or sill connects to a box jamb in light gauge framing, alongside an alternate connection to a hollow structural section. The light gauge assembly utilizes twelve gauge clips measuring two by two by six inches fastened with three number ten sheet metal screws on each leg, complemented by a twelve gauge plate on each side secured with four equally spaced number ten sheet metal screws. A maximum clearance of one-quarter inch is maintained between the jamb and the header or sill, with typical one-and-a-half-inch dimensions specified at top and bottom. The hollow structural section connection detail indicates a welded junction with a three-sixteenth-inch fillet weld.
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