Concetto Spaziale (1955) is most likely a study for a terracotta sculpture, as can be observed by the pencil outlines deliniating the boundaries of the ceramic plate. This work sees Fontana outlining dynamic spatial images consisting of familiar elements and sharp forms which shoot across the paper by trajectories of drawn holes.

"[…] In presenting my Spatial Concepts, it is obvious that I do not want to make modern painting or sculpture; luckily I feel myself free from this form of contemporary art hysteria, the logical consequence of an art that cannot find a way to develop…And by piercing the canvas, these innocent holes guarantee the first spatial sign of an art for the Space Age."

With this statement, published by Giampiero Giani in his book 'Spazialismo, origini e sviluppi di una tendenza' (Edizioni della Conchiglia, 1956), Fontana reaffirmed his own commitment to an increasingly anti-pictorial and anti-sculptural direction, one that was by now a conceptual direction.