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Table 2 Qualitative fit testing results using mask frames

From: 3D Printed frames to enable reuse and improve the fit of N95 and KN95 respirators

Type of test:

Performance of frames with respirators with broken or defective straps

Performance of frames for individuals who failed baseline testing

1860 model (total n = 34)

Number Passed (%)

24/30 (80.0 %)

0/4 (0 %)

8210 model (total n = 10)

Number Passed (%)

9/9 (100 %)

0/1 (0 %)

Kimberly Clark duckbill model (total n = 16)

Number Passed (%)

12/15 (80.0 %)

0/1 (0 %)

KN95 model (total n = 25)

Number Passed (%)

11/12 (91.7 %)

6/13 (46.2 %)