3M 8833 valved respirator mask with FFP3 protection in accoradance to EN149:2001. This mask is a highly improved upgrade compared to the 8812, 8822 from the 3M 8000 series. Although very similar, the mask has slightly longer panels to wrap around the front of the face providing a more secure fit. This makes the mask much more reliable, and effective, against fine dust particles. The 8833's are still one size fits all, meaning you won't struggle to find a specific size to fit you. The 3M cool flow valve found on the front of the mask allows heat to escape preventing moisture and a stuffy atmosphere inside. Dolomite test ''D'', resists clogging for longer periods. Product supplied in boxes of 10.