Airflow Direction Incorporated’s BALL-IN-THE WALL & BAULIN-TUBE® indicator shows if your room is under proper negative or positive pressure. The ball rolls in the direction of airflow and incorporates a built-in failsafe feature.
FIRE BARRIER MANAGEMENT & CODE COMPLIANCE. Risk Assessment and Remediation, Life Safety Drawings and Plans, Multiyear Compliance Programs. Inspections, repairs and recertifications: Fire Doors, Fire Dampers, Firestopping, Photoluminescent Egress.