There is a selection of square sections that are 0.5, 1, 1.5, and 2 mm square.
40pcs Styrene ABS Round Tubes Pipes 50cm Architectual Model Layout ABS03
48pcs Styrene ABS Round and Square Rod Pipes Architectual Accessories ABS00
30PCS Styrene ABS Angles L-shaped Architectual 50cm for Model Layout ABS05
60pcs Styrene ABS Solid Rod Round Rods 500mm Architectural Materials
