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Our 20x14 Hard Hats Must Be Worn Precaucion Sign maximizes safety in high-risk areas. Constructed from .040 polystyrene plastic, this bilingual sign withstands moisture and harsh weather, ensuring reliable indoor and outdoor performance. The large, clear English and Spanish text enforces hard hat use, enhancing worker protection. Featuring pre-drilled holes and rounded corners, this sign is ideal for large construction projects, warehouses, or industrial facilities.