Numatic M-Class Dust Vacuum Cleaner 9LNumatic M Class Dust Vacuum Cleaner 9L Product Overview Delivering outstanding performance, value and reliability with M Class filtration. There is a legal duty for employers to prevent or adequately control worker exposure to construction dust. The NEW TradeLine TRM240 is an effective and affordable solution to ensure site compliancy where an M Class product is required. Robust and durable, the TRM240 provides everything you expect from a trusted