InterMask (TM) 3 Ply Face Mask, Disposable Protective Mask12888-001; Civilian Grade Face Mask. Being high level static filtration non-woven, effectively preventing micro dust and bacteria with Bacteria Filtration Efficiency (BFE) at 96.2%, Particle protective performance at 71.6%. pH Value is 6.9. Length : 175 mm (+/- 1cm), Width : 90,5 mm (+/- 1cm). with CE/FDA. Weight: 25 gsm + 25 gsm + 20 gsm Package: 50 Pieces per Bag; 40 bags per case. Case size:52x38x25cm