FWIW, this is a Non Valve NIOSH N95 cup mask sold by COSTCO in bulk. Hopefully this info can help anyone in need. I also did homework and found the CDC/NIOSH approval link and OEM info link for this mask, if anyone is interested in.
Adjustable nose metal with foam pad underneath.
Elastic head band.
Have to buy 100 pcs.
from its on-line description::
This Item is Only Available Online at Costco.com
Approved for use by Medical Professionals (Costco removed this description recently)
Face-to-Mask Sealing Edge Design Minimizes Inhaled Air Leakage at the Edges
Provides ≥95% Filtration Level with a Particle Size of 0.3 Microns
Adjustable Nose Piece and Head Straps for Tight Fit
CDC NIOSH Approval Link: