Manufacturers of self-contained breathing apparatus use color-coded face pieces to indicate different sizes. Which of the following statements is true concerning the colors of SCBA face pieces?

Correct Answer: Option D — All of the above.

SCBA face piece sizing is standardized across many manufacturers to ensure a proper fit-test seal. Color coding is used to quickly identify sizes: Green for Small, Black for Medium/Standard, and Red for Extra Large. Proper sizing is critical to maintaining the positive pressure seal required for respiratory protection.