Expandable Hanger for Beam

An adjustable hangar for attaching an elongate beam to a structural building member includes a lower module and an upper module that are engaged with one another in a vertically reciprocal manner. The lower module includes a pair of parallel side panels spaced apart from one another and a lower beam support web. The upper module includes a top panel opposite the support web and a pair of opposite side members. The upper module further includes an upper support flange substantially parallel to the support web. In one embodiment, the upper module side members engage with the lower module in a vertically slidable relationship and define a beam receipt channel therebetween. When a beam is installed in the receipt channel, the upper and lower modules are adjusted vertically to trap the beam between the upper panel and support web with the beam circumscribed by the hanger.