Protect your home, business, or vehicle from daily pollution or terrorist attack with the CastellexAir 350 nuclear, biological, and chemical (NBC) filter ventilation system. Operating a three-stage filtration process for optimal (99.99% efficiency) cleaning, this NBC system is designed to provide 150 m3/h of fresh air to a maximum of 24 people in a panic room or enclosed space. The system positively pressurises the air in the space to prevent pollution entering through tiny cracks or gaps, and operates at a low 73 dBA noise level (approximately that of normal conversation) at 50 Hz. The NBC air filtration system’s triple failsafe design means it will continue to operate even if both mains power and the backup battery fail, thanks to the manual power backup system. Power consumption is 89 W, operating from the supplied 110/240 V ACpower cord, backup battery, or power unit. Should the main system itself become compromised, a backup system will kick in. The system is fitted with a USB charger for communication devices. Stay connected to the outside world while you wait for help or for the panic event to come to a safe conclusion. The CastellexAir 350 life support system incorporates a blast valve designed to manage room pressure in the event of explosions or sudden concussive occurrences (for example aftershocks or building collapse). The valve protects your bunker, fallout shelter, or survival unit to a high 123 psi. The system removes chemical, biological, and nuclear elements from the air to be stored in a hermetically-sealed filter until they can be safely dealt with. Fit your CastellexAir 350 NBC system in safe rooms, panic rooms, shelters, or enclosed spaces in domestic premises to protect your family from terrorist attack, wartime events, or natural disasters. Install in commercial and business premises to offer a place of refuge to employees, or to protect them from rising levels of pollution in urban and suburban environments. Fit in mobile real estate such as a yacht, van, or work vehicle deployed in heavily-polluted or dangerous areas. Supplied with the unit are three filters—pre, HEPA, and carbon—plus a blast valve, an overpressure valve, a blast valve fixing set, a backup battery, a USB charger, NBC pipe, a power cord, and a power unit. Additional filters may be bought. Optional extras include replacement batteries, a pressure indicator, an O2 indicator, and a wall fixing set. Available in white or black. Constructed from high-quality components in the UK. Attractive modern design. Features: Collective filtration system intended for up to 24 * people in panic room The system provide 150 m3/h of fresh air High blast protection (123 PSI) Power backup system for operating without mains Manual power backup system if battery discharge or failure event “Castellex Air 350 protect you from all known warfare gases and also Biological weapons/ contamination, Radioactive contamination, Radioactive Iodine and Iodine Organic Compounds, Acidic gases, Volatile Organic Compounds (VOC’s) and more”
Air flow up to 150 m3/h
Power consumption 89W
Power supply 110-240 VAC
Frequency 50-60 Hz
Hepa filter H14
Pre-filter F7
System efficiency 99.99%
Noise level dB up to 73
Color design white or black
Include: Castellex Air 350 unit Pre-filter Hepa filter Carbon filter Blast valve Overpressure valve Blast valve fixing set Backup battery USB charger NBC pipe 3m Power unit Power cord

Castellex Air 350

Complete NBC air filtration system with preinstalled filters. The Castellex Air 350 is a three-stage filtration system suitable for use in nuclear bunkers, panic rooms, and bomb shelters as well as in domestic and commercial environments at high risk from pollution or attack. This system is fitted with a highest-rated H14 HEPA filter, an F9-rated pre filter, and a carbon filter capable of removing most known warfare gases from the air.



£5,470.00 + VAT

Out of stock

Additional products

  • Blast valve gasket set 125

    £139.00 + VAT
  • Blast valve fixing set

    £139.00 + VAT
  • Wall fixing set Air300 series

    £339.00 + VAT
  • Blast Protected Overpressure valve 125

    £1,690.00 + VAT
  • O2 indicator

    £990.00 + VAT
  • Battery replacement S

    £429.00 + VAT
  • Blast valve 125

    £1,740.00 + VAT
  • Filter pack 300(500) series (pre filter, hepa and carbon filters)

    £2,470.00 + VAT
  • NBC pipe set 125

    £665.00 + VAT
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Castellex has vast experience in designing and manufacturing NBC (Nuclear Biological Chemical) Air Filtration/ Air supply stations for different applications. It’s widely used across the Globe by military, hospitals, private individuals. No nuclear bunker or survival shelter is completed without the state of the art Castellex NBC air filtration station.
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