Caution Sign: Door Must Be Kept Closed - Safety Warning Template #2008317 (License: Personal Use)

This bright yellow caution sign features bold black uppercase text reading “CAUTION” on a black banner at the top, followed by “THIS DOOR MUST BE KEPT CLOSED” in large, legible font. The high-contrast design ensures visibility from a distance and complies with common workplace safety signage standards. A small attribution watermark (“www.PrintableSigns.net”) appears at the bottom.

Used in industrial facilities, laboratories, cleanrooms, or HVAC-controlled environments where maintaining sealed doors is critical for safety, contamination control, fire prevention, or energy efficiency. Matches user intent for downloading printable safety signage templates.