White and blue mandatory sign screwed to a brick wall to warn about a threat. In the middle of the panel, there is a gas mask symbol and the message s

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White and blue mandatory sign screwed to a brick wall to warn about a threat. In the middle of the panel, there is a gas mask symbol and the message saying "Respiratory protection must be worn in this area".

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Size: 5003px × 3335px
Location: USA
Photo credit: © Christophe Coat / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: accidents, alertness, area, backgrounds, block, cinder, communication, composite, danger, digital, digitally, disasters, environment, gas, generated, hazardous, horizontal, image, information, label, mandatory, mask, people, photography, place, pollution, problems, risk, rule, safety, security, sign, symbol, text, threats, wall, warning, working