Must wear face mask sign lets the public and employees know that wearing a face mask is required in this area. COVID-19 Coronavirus prevention signs help people avoid contamination when at the construction site, warehouse, office, school or factory. Prevention signs are useful tools to help protect the health and safety of both staff, students, customers and the public. 60 Mil Styrene hard sign Is Washable and UV resistant. 4"x 6" Standard Size. High contrast Yellow & Black design. Dimensions: 4"W x 6"H
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