A kitchen range subframe includes air channels for passively directing air to andor from an element enclosure within the kitchen range, and a range component shelf that is configured to mount one or more range components to the kitchen range subframe. The first valve is operable to allow fluid flow into the chamber, and the second valve operable to allow fluid flow out of the chamber. The first pump provides the variable clamping force. 5 m are excluded from the molding. Measured blood pressure is outputted as an indication of the position of the distal end of the introducer assembly in the tissue.