Close-up of a dark gray plastic HVAC part with a white 'D' and a…

A close-up, overhead view of a dark gray plastic part with a white letter 'D' marked on it. The part appears to be a component of an HVAC system, possibly a flap or vent, with a ball-jointed actuator visible on the right side.

AI caption October 2015 · Photo 31 of 54