Keep Door Closed Sign - Safety & Energy Efficiency Indicator #59101 (License: Personal Use)

This rectangular sign features bold, uppercase blue lettering on a white background, enclosed by a thin blue border for high visibility. Designed for durability and compliance, it’s commonly mounted near doors in facilities requiring restricted airflow, fire containment, or hygiene control. The simple, universally understood message supports operational protocols and regulatory standards.

Used in hospitals, labs, server rooms, schools, and offices to enforce door-closure policies for safety, HVAC efficiency, or contamination prevention; matches user intent for signage procurement, facility management, or OSHA compliance guidance.