100% PVC-free, EN143: 2000 + A1: 2006 certified, P1 R fine dust filter with advanced folding filter technology: very low breathing resistance, suitable for series 7000 and 9000 Easylock® masks, the filter can be directly attached to the Easylock® connection to the face or gas filter, Moldex 903001 Easylock® fine dust filter P3 R, packed per 20 pieces