From USC Architecture circa 1960s.

Mid Century Donald Judd inspired school chairs with perforated curved back rests. Large 20x20” rolled steel seats and backs with solid steel frames.. Originally made for public outdoor use- though they might look lightweight, they’re actually quite heavy/ sturdy. Light signs of weathering/ age.

Height: 27.75 in (70.48 cm)
Width: 19.5 in (49.53 cm)
Depth: 19.5 in (49.53 cm)
Seat Height: 16.25 in (41.27 cm)