The Schiller Ergo-Spirometry Face Mask with Seal, is an Essential Accessory for the Ergo-Spirometry 7450 Series. It is a Blue Face Mask which comes in Five Different Sizes; Petite, Extra Small, Small, Medium, and Large.
2.100961: Schiller Ergo-Spirometry Face Mask with Seal, Petite
2.100962: Schiller Ergo-Spirometry Face Mask with Seal, Extra Small
2.100963: Schiller Ergo-Spirometry Face Mask with Seal, Small
2.100964: Schiller Ergo-Spirometry Face Mask with Seal, Medium
2.100965: Schiller Ergo-Spirometry Face Mask with Seal, Large