The Portwest P921 is a pack of 6 ABEK type class 1 gas filters for Portwest’s bayonet-fitting respirators. They protect against organic and inorganic acid gases and vapours, sulphur dioxide, and ammonia and its derivatives, where the boiling point is higher than 65°C.
The filters are compatible with the P500 Full Face mask and the P420, P430, P421 and P431 Half Masks. They are used as twin filters, one on each side of the mask, which improves comfort and balance on the face.
Key features
- Portwest bayonet system gives a safer connection between mask and filter
- Twin filter set-up spreads the weight evenly for better balance and comfort
- Lightweight construction helps reduce load on the face and head
- Covers organic and inorganic acid gases and vapours, sulphur dioxide, and ammonia and its derivatives (boiling point above 65°C)
- Compatible with the P500 Full Face mask and the P420, P430, P421 and P431 Half Masks
- Six filters per pack
Standards and protection
Certified to EN 14387 Type ABEK Class 1. The filters are CE Category III and UKCA marked.
Mask compatibility
These bayonet filters fit the Portwest P500 Full Face mask and the P420, P430, P421 and P431 Half Masks. Check that your mask is one of these models before ordering.
Care
Follow the care instructions on the label.




















