The MOLDEX M7940A P2/P3 Particulate Filter Disks (Pair) deliver 99.97% or greater efficiency against both oil and non-oil-based particulates. These PVC-free, fiberglass-free filters feature a low-profile design for a wider field of vision and can be used as prefilters with any Moldex gas or vapour cartridge. With no plastic casing to discard, they’re an environmentally friendly, high-performance choice for clean and comfortable protection.