3M 9322 Prem Valved Dust/Mist 9322 The innovative 3 panel design of the 10 X 3m 9322 Prem Valved Dust/Mist 9322 offers great comfort, improved wearer acceptance. Items are packed individually to avoid any and all sorts of contamination, the 3M 9322 Prem Valved Dust/Mist 9322 is light weight & foldable for easy storage. Centrally positioned CPC valve reduces heat build-up. Soft cover web on inner panel provides greater comfort on the skin. EN149 FFP2S (APF:10 x OEL).