Give your tunnel a Cut Stone face. This double portal fits over two N scale tracks. Easy to color plaster castings. Color with Earth Colors™ Liquid Pigment. Set contains two pieces.
 
Outside: 3 15/16" W x 2 23/32" H (10 cm x 6.9 cm) each / Inside: 2 1/2" W x 1 15/16" H (6.35 cm x 4.92 cm) each