O TUNNEL PORTAL CONCRETE 1 EA

Tunnel Portals are built at the entrances to tunnels. They hold back rocks and dirt from tunnel entrances and are often used in combination with Retaining Walls. Easy to color with Earth Colors™ Liquid Pigment. Outside: 9" W x 8 7/16" H (22.8 cm x 21.4 cm) / Inside: 4 1/8" W x 6 1/2" H (10.4 cm x 16.5 cm) Meets NMRA specifications About Portals, Culverts & Retaining Walls Tunnel Portals, Retaining Walls, Culverts, and Roads reinforce natural terrain contours and add functionality, realism and interest to your layout. The high-density castings are detailed realistically, colored easily with Earth Colors™ Liquid Pigment and meet NMRA specifications.