Improved vertical clothes drying rack (S2) comprising: - a frame comprising two uprights (M) and a lower crossbar (T1) that connects said two uprights (M) in lower position; each upright (M) comprising a base (B) suitable for facing the ground; - two opposite pairs of revolving feet (P) that are connected to the frame wherein each revolving foot has a vertical axis; - at least one tilting grille (G) supported by said uprights (M) and supported by an opposite coaxial pair of pins that protrude from said two uprights (M), in such a way that said at least one tilting grille (G) is configured to be movable between an idle position, wherein said at least one tilting grille (G) is in a vertical position, and an operating position, wherein said at least one tilting grille (G) is in a horizontal projecting position relative to said two uprights (M), wherein said lower crossbar (T1) comprises two end sections (TT) and two transverse end sections (ST), wherein the end sections (TT) of said lower crossbar (T1) comprise pivoting means (M2) for pivoting said opposite pairs of revolving feet (P), around respective vertical axes, and said transverse end sections (ST) of said lower crossbar (T1) comprise connection means (M1) for connecting the lower crossbar (T1) to the two uprights (M); each upright (M) being provided, in correspondence of its base (B), with connection means (M3) that are configured in such a way to cooperate with said connection means (M1) provided in the transverse end section (ST) of said lower crossbar (T1), characterized in that said lower crossbar (T1) is moulded in one piece from plastic material and reinforced with an internal metal core and a rib that runs along the upper edge of the lower crossbar (T1). - a frame comprising two uprights (M) and a lower crossbar (T1) that connects said two uprights (M) in lower position; each upright (M) comprising a base (B) suitable for facing the ground; - two opposite pairs of revolving feet (P) that are connected to the frame wherein each revolving foot has a vertical axis; - at least one tilting grille (G) supported by said uprights (M) and supported by an opposite coaxial pair of pins that protrude from said two uprights (M), in such a way that said at least one tilting grille (G) is configured to be movable between an idle position, wherein said at least one tilting grille (G) is in a vertical position, and an operating position, wherein said at least one tilting grille (G) is in a horizontal projecting position relative to said two uprights (M), wherein said lower crossbar (T1) comprises two end sections (TT) and two transverse end sections (ST), wherein the end sections (TT) of said lower crossbar (T1) comprise pivoting means (M2) for pivoting said opposite pairs of revolving feet (P), around respective vertical axes, and said transverse end sections (ST) of said lower crossbar (T1) comprise connection means (M1) for connecting the lower crossbar (T1) to the two uprights (M); each upright (M) being provided, in correspondence of its base (B), with connection means (M3) that are configured in such a way to cooperate with said connection means (M1) provided in the transverse end section (ST) of said lower crossbar (T1), characterized in that said lower crossbar (T1) is moulded in one piece from plastic material and reinforced with an internal metal core and a rib that runs along the upper edge of the lower crossbar (T1). <EOS>