This region sits in a cold climate band with severe winter conditions, and a door built in 1987 predates the insulation standards that are routine now. Compare Rapid Valley's roughly 3,253 households and $85,217 median income to the wider service area's 10,745 households and $78,801 median - this is a smaller, somewhat higher-income pocket, and it shows in how many of these original doors have already been upgraded versus how many haven't. The ones still original are the thin-steel, extension-spring doors described above, and in a severe cold band, an uninsulated steel door transmits enough cold to make the garage noticeably colder than an insulated one would - which matters if the garage shares a wall with living space, as it often does on houses of this vintage.