CBRN & NBC Air Filtration Systems for Shelters

Filter Incoming Air & Maintain Positive Pressure in Shelters and Bunkers

CBRN air filtration systems supply filtered outside air to protected spaces, helping reduce the entry of specified airborne contaminants and maintain positive internal pressure. Philadelphia Safety Devices offers standard and custom CBRN / NBC filtration and emergency ventilation systems for safe rooms, bunkers, civil defense shelters, protected containers, and other facilities.

CBRN stands for chemical, biological, radiological, and nuclear; NBC refers to nuclear, biological, and chemical protection. Systems are selected according to the anticipated hazards, required airflow, shelter occupancy, installation conditions, and backup power needs.

Need Help Selecting Your Shelter Filtration System?

Our team can help evaluate your shelter layout, occupancy, airflow needs, potential hazards, and backup operating requirements to identify an appropriate filtration and ventilation solution.

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Small Shelter & Safe Room Systems

SAFE 360 and ARC 50 CBRN / NBC filtration systems provide compact options with manual backup for small shelters, bunkers, and safe rooms. System selection depends on occupancy, required airflow, available space, and shelter conditions.

Shelter & Bunker Systems with Manual Backup

ARC 180, ARC 240, ARC 300, ARC 450, ARC 600, and IVL-1 systems offer CBRN / NBC filtration with manual backup for protected spaces. Multiple configurations support project-specific ventilation needs, with sizing based on occupancy, shelter volume, leakage, and additional air demands.

Large Shelter Systems with Generator Backup

ARC 900, ARC 1200, and ARC 1800 CBRN / NBC filtration systems serve large shelters and bunkers with higher airflow requirements. Generator backup arrangements support emergency operation as part of the facility’s ventilation and power design.

High-Capacity CBRN / NBC Filter Banks

Scalable CBRN / NBC filter banks provide filtration for large shelters and facilities with specialized airflow requirements. Configurations offer airflow up to 18,000 m³/h per unit, depending on the selected assembly and operating conditions.