CSA Z94.1 vs ANSI/ISEA Z89.1: Hard Hat Standards Compared
Canada's CSA Z94.1 and the US ANSI/ISEA Z89.1 hard hat standards use the same Type and Class language but differ in testing and certification. Here is how the two systems map, what the shell sticker must say in each jurisdiction, and why dual-certified hats solve the cross-border problem for contractors.
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