Cortina Triangle Reflector Warning Kits meet and exceed all DOT standards and requirements of FMVSS 125. The unique One-Piece Living Hinge Box allows for thousands of openings and closings and eliminates all hinge problems that the industry has faced for years. Triangle erect: 17-1/4” wide x 16-1/2” hight Base: 17-1/8” long Standard Case: 18-1/4” long x 5-1/8” wide x 4-1/2” high Living HInge Case: 18”-1/2 long x 5-1/8” wide x 4-1/4” high