This compartment contains the 3 types of mask commonly used with O₂ delivery.

The most frequently used mask is the High Concentration Non-rebreathing Mask that will deliver up to 100% O₂ via a bag reservoir and is packaged in a blue bag. The paediatric version of this mask is identical apart from the size of the mask itself and comes pagaged in a pink bag. Both of these masks come supplied with a clear plastic connection tube.

Finally, the 24% O₂ mask comes packaged in a clear bag and is used to deliver O₂ to patients suffering from COPD or similar underlying medical conditions. It's connector tube is packaged separately and is also contained in this compartment.