Dust Masks FFP2 Valved Fold Protective Safety Face Mask - Grey Dust Masks FFP2 Valved Fold Protective Safety Face Mask - Grey. Feature: - The folding active carbon high-filtration mask with a filter efficiency level of FFP2 or greater against particulate aerosols. - Unique fastener design for adjustable straps. - High filtration efficiency and low breathing resistance. Specification: 1. Material: Non-woven 2. Size: 236mmx125mm 3. Color: Grey/Black 4. Package weight: 273g 5. Package: PP bag Package Included: 1 x FFP2 Valved Fold Dust Mask