10 X 3m 9312 Prem Valved Dust P1v 9312 The advanced 3panel design of the 10 X 3m 9312 Prem Valved Dust P1v 9312offers greater comfort, easy communication,improved wearer acceptance. Individually packed to avoid contamination, the 10 X 3m 9312 Prem Valved Dust P1v 9312 arelightweight & foldable for easy storage. Centrally positioned CPC valve prevents heat build-up. Soft cover web on inner panel ensures greater comfort on the skin. EN149 FFP1S (APF:4 x OEL).