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The reusable N-TEK NanoTek filter is compatible with all 776BC masks and is shaped in a 3D form, allowing for an exceptional fit.
The N-TEK Filter uses a tricot microfiber face combined with a micromesh back. The fabrics are laminated with Nano treated PVDF in 2~4 micron.
All X-Pro Face Masks include 1 X-Frame and 1 X-Pro Filter.