Castellex Air350 Mark II

The Castellex Air350 Mark II is an updated Air350 generation: a three-stage NBC air filtration system for nuclear shelters, safe rooms and panic rooms, as well as private and commercial premises in areas of higher pollution or threat.

Compared with the earlier model, the Mark II has higher-capacity backup batteries and a manual drive, so the system can run longer without mains power.

Three-stage filtration gives 99.99% efficiency and supplies 150 m³/h of fresh air for up to 24 people. The system maintains positive pressure in the room, so contaminated air cannot enter through cracks. Noise level in operation is 71 dBA.

A blast valve is integrated into the system, controlling room pressure during explosions or shock waves and withstanding up to 123 PSI. Captured chemical, biological and radioactive contaminants stay in a hermetically sealed filter.