ashlar wall part of original phase of complex's construction to delimit the boundary between room 19 and the courtyard to the south. Rough protruding N face of easternmost block aligns with floor slabs of SU 5739.
Tufo slab floor drain cover west of block 5586 (5739), Tufo step threshold west of wall 5574 (5740), Continuation of east-west ashlar wall west of 5740 (5741) and Single ashlar block oriented diagonally north of wall 5741 (5771)