-10%
The 26 litre class H extractor, for work where the dust itself is the hazard — asbestos, mould, and other carcinogenic or pathogenic material. Class H is a different regime rather than a finer filter: the machine monitors airflow and warns when it drops, and the bag is designed to be closed and removed without releasing its contents. Where H is required it is required by regulation, and an M-class machine is not a substitute.
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