Abstract: A mirror and housing assembly includes a multi-layer electrochromic (EC) mirror subassembly supported by a carrier. The EC mirror subassembly includes a front transparent element and a rear element, each having front and rear surfaces, a reflector on one of the surfaces of the rear element, and further includes a seal spacing the front and rear elements apart to define a chamber therebetween. An EC material, such as solution phase, gel phase, solid phase, or a hybrid EC material, fills the chamber and is electrically connected to a control for controlled dimming of reflections from the reflector. The front and rear elements each are characteristically very thin, such as about 1.6 mm to 0.8 mm, or more preferably 1.2 mm to 1.0 mm, and most preferably 1.1 mm, such that the EC mirror subassembly is characteristically surprisingly and unexpectedly low in weight.