The designations of the views below as top, bottom, right side, left side, front, and rear are for ease of discussion only and are not intended to limit the respiratory equipment to one particular orientation. The respiratory equipment can be oriented in other directions which would alter these designations. The views are not necessarily shown in the same scale, and any change in scale between different views is not intended to limit the respiratory equipment to a particular size.
The portions of the respiratory equipment shown in broken lines appearing in