I'm a code compliance officer and I've recently conducted an inspection of a new remodeled two family home. each unit contains two bathrooms, each bathroom has a baseboard heater located within six inches of the edge of the shower pan. The heater is operated from a knob/thermostat on the unit itself. My intuition is that the unit should be suitable for damp location, as a lighting fixture would be if located within the "zone" of the shower (exhibit 410.1 illustrates). Any thoughts on this?