V-TUF StackVac Essential Round Cartridge Filter has HEPA H13 filter media for best filtration efficiency, ensuring the V-TUF STACKVAC vacuum becomes fully compliant with all M-Class silica dust regulations. The V-TUF STACKVAC must always be used with this cartridge filter securely fixed inside to ensure the dust extractor meets the HSEs minimum requirement of using M-Class rated equipment on UK construction sites. Using the VTM402 V-TUF filter ensures full protection from hazardous dusts escaping back into the air and harming the lungs of the surrounding workforce. M-Class filtration is the minimum regulation required on UK building sites set on by the Health & Safety Executive. The V-TF M-Class STACKVAC Cartridge Filter (VTM402) offers you affordable compliance and protection from common dust related health issues! The new M CLASS STACKVAC is a keystone that helps V-TUF achieves their mission: To save and improve lives of those in their line of duty. Ideal for: Construction & woodwork