This combination gas and particle filter protects from organic and inorganic acid gases and vapours, sulphur dioxide, ammonia, and its derivatives.

• Bayonet connection
• Retail box aids presentation for retail sales
• Lightweight and comfortable

Classified as a class 1 filter for gases and class 3 for particles, it protects against harmful substances, solvents, toxic particles, and micro-organisms. The special Portwest bayonet system ensures a safer connection between the mask and the filter. This filter is compatible with half masks P420, P430, P421, P431, and full face mask model P500.