EXTRA WIDE DOUBLE 'PENNSY' PORTAL - For Hi-Railers a 9½" wide portal to accept the standard crossover width of most popular hi-rail track systems. (Gargraves, Curtis Hi-Rail and Ross Custom switches). Made of light weight polyurethane foam. Gray primer finish. 'PENNSY' O-SCALE SYSTEM is a fully integrated system featuring the classic dressed block pattern of the Pennsylvania RR. Each component matches with each other to create a limitless combination of masonry construction. VIRTUALLY EFFORTLESS!