BOFA
BOFA AM 400 | BRATUS
BOFA AM 400 | BRATUS
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The AM 400 is our premium filtration and atmosphere control system for additive manufacturing processes. Designed to filter particles in an inert atmosphere, it is the ideal choice for direct metal laser sintering and selective laser melting polymer applications. The system is hermetically sealed to retain inert gas and remove oxygen, and operates in closed-loop mode.
- Low leakage
- High contrast display
- Removable, sealed filter housing
- Quick and easy case removal
- Remote diagnostics via USB

Ideally suited for: Laser powder bed fusion, directed energy deposition, binder jetting.
Functions
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Intelligent Operating System (iQ)
The Intelligent Operating System (iQ) provides easily accessible real-time data on the performance of your extraction system. It offers several performance improvements, including enhanced extraction efficiency, individual filter status monitoring, and integrated design features developed to reduce the cost of ownership.
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DeepPleat DUO pre-filter
The DeepPleat DUO pre-filter is designed to maximize filter life. It incorporates a high-capacity separation chamber within the filter, which acts as a pre-separator to help extend the life of the pre-filter, in turn protecting the HEPA filter from premature blockage.
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HEPA filter
HEPA filters are designed to filter 99.995% of 0.3-micron particles. Secondary filter for the removal of fine particles.
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Reverse flow air technology
Reverse air flow technology reduces velocity and changes air direction, causing more particles to reach the filter discharge chamber. This reduces particle penetration into the filter media, significantly improving filter capture performance and extending the filter's service life.
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Automatic flow control
Automatic flow control allows the user to pre-set the correct air flow rates for the specific application, thereby helping to maintain air flow. This results in lower noise levels and helps protect more expensive HEPA filters.
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System OK signal (optional)
The system OK signal warns of an error when filters are blocked and when filters are nearing full capacity, allowing for effective maintenance planning.