The Railway Conductor Model Shop
Plastruct 90518 BFS-12P Polystyrene I Beam 9.5mm By 375mm
Dimensions are H (height) 9.5mm (3/8 inch) by W (width) 4.8mm (3/16 inch) by T (thickness) 1.1mm (0.045 inch) and is 375mm (15 inches) long.
