Nuclear Fallout Shelter Tin Metal Steel Sign, Reproduction of Old Rusted Vintage DOD Sign :: 11.5 x 17.5 inches [AYY026] 11.5 x 17.5 inches Made in the USA using sturdy 24 gauge STEEL, not easily bent. Holes for easy hanging are reinforced with metal grommets. Edges are rolled and hemmed for safe handling. Historically accurate design with vintaged & weathered image effects.