Table 1. Count Median Diameters (CMD) of particles collected at vulnerable locations between facemask treatments in the enclosed box environment.

	Location	CMD
No Mask	Front	0.74
Surgical	Side	1.95
Sewn	Top	1.84
SewnF	Top	2.54
SewnPC	Top	2.48
N95L	Front	2.32
N95T	Top	<0.5

CMD in μm shown for each facemask type, including No Mask, Sewn, SewnF, SewnPC, Surgical mask, N95L and N95T at their respective vulnerability positions in the enclosed box environment.