Modern Structural Helmet
Modern structural helmets (that is, intended especially for structure fires) are worn in the United States and Canada, as well as Britain, Australia and in parts of Asia (notably Hong Kong, Macau, Taiwan and Guangzhou). Structural helmets are made of either thermoplastic or composite material. The brim at the rear of the helmet is longer than the front and a face shield(s) is usually attached to the front. Newer "Metro" - The name given by several leading helmet manufacturers - helmets are also much lighter than both leather and composite traditional helmets.
Read more about this topic: Firefighter's Helmet
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