O-SCALE PENN-OHIO DOUBLE CONCRETE PORTAL - This "antique" double portal represents the "old-fashioned" method by which wood was used as the framing material for precast and cast vertical concrete. A 9-1/2" wide portal to accept the standard crossover width of most popular hi-rail systems. Outside dimensions: 14" W x 9-1/2" H x 1/2" thick. Inner arch dimensions are 9-1/2" wide by 6-1/4" high. Made of light density foam. Easy to cut. Easy to alter and detail. Factory gray primer finish.