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The proposed test panel for firefighter masks is a shift of the entire 10 cells of the National Institute for Occupational Safety and Health (NIOSH) 2007 panel to 7 mm greater in face width and 4 mm greater in face length. The numbers 1 to 10 represent the 10 panel cells. The dotted lines represent the size boundaries for three mask/respirator sizes (S, M, and L), which are defined by two logistic regression models.
