
The ST53™ combines Avon Protection's FM53 mask technology with an advanced modular breathing apparatus to provide positive pressure SCBA and/or PAPR capability for specialist operations.
Developed with the unknown elements of a threat scenario in mind, the ST53™ is the most advanced CBRN respiratory solution on the market. It enables a fast response to changing operational conditions in one complete modular system.
A switch between negative (filter) and positive (SCBA) pressure is achieved at the flick of a lever on the front of the mask. And by attaching a short or long duration compressed air cylinder, it is possible to enter a location on filter mode, assess the situation and change to SCBA mode if the need arises.

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Filters CBRNF12B
CBRNF12CE
CTF12
GPCF50
CSCF50
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Vision Clear Outsert
Sunlight Outsert
BlueBlocker Outsert
Laser Outsert
Vision Correction Assembly
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Communication
Voice Projection Unit w/Microphone Assembly
Hydration Canteen
PAPR STPAPR
Cylinders 30,45 & 60 minute carbon wrapped cylinders
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* denotes required field



