Almost intact slab of the roof-gutter possibly belonging to one of the long sides of the Hekatompedon's roof. It was discovered in three fragments, two of which were discovered the summer of 1955 on the Acropolis. One of the slab’s sides is protruding and the other one forms a socket to facilitate its assemblage with the previous and the following slabs of the roof-gutter.

The roof-gutter is decorated with alternating, engraved palmettes and lotus flowers blooming out of motifs in the shape of the figure eight. The upper part is crowned by a fishbone motif embellished with small dots. The cornice (Ακρ. 4572) under the roof-gutter also bears engraved and painted decoration.