Size: 196*178*200*4.5 (to be used with Φ140 column);
Height: 200;
Width: 178;
Wall thickness: The wall thickness of the retro-reflective black part should not be less than 4.65-4.75;
Aperture: 20*24;
Zinc layer: Average of 85 μm, with the lowest point not less than 85 μm (low point ratio not exceeding 2%);
Single weight: 4.32kg.
