A housing for the bath fan can be attached to {HEAD ~ joists} in {TAIL ~ the ceiling} by a telescoping brackets 
in
A housing for the bath fan can be attached to { HEAD ~ joists } in { TAIL ~ the ceiling } by a telescoping brackets
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH