V-TUF 20 Litre M-Class Hepa H13 99.99% Rated Bags made specifically for the STACKVAC110 (110V) & STACKVAC240 (240V) industrial V-TUF dust extractor are made of strong HEPA filter media with pleated edges for maximum expansion and triple stitched seams to ensure reliable dust retention. They also have a rubber inlet seal and shut-off-gate to minimise dust leakage during operation and disposal. VTM401 V-TUF bags provide an extra layer of HEPA filtration, ensuring the V-TUF STACKVAC vacuum becomes fully compliant with all M-Class silica dust regulations. The V-TUF STACKVAC dust extraction vacuum bags (Order Code: VTVM401) must always be used when operating the machine, to ensure full protection from hazardous dusts escaping back into the air and harming the lungs of the surrounding workforce. V-TUF M-Class Rated Dust Extractors are designed to protect you from Silica Dust! Silica dust is created when sanding, drilling, demolishing, cutting, sweeping products such as concrete block & bric