With a median household income of $57,449 in Zilwaukee, a fair number of these older single-car doors have had the same panels since they went up, patched with paint rather than replaced. Add in a cold, severe climate band, and steel panels from that era take the two hits that do them in over decades: rust working through from the inside where insulation backing has trapped moisture, and denting from contraction cracks in cold snaps that widen every winter until the seam gives. Wood-look panels from the same build years crack along the embossing lines instead, especially on the bottom section where snow and road salt sit against the door for months at a time. Neither failure mode is unique to Zilwaukee, but a town with 776 households built mostly in one narrow window ends up with a lot of doors failing the same way in the same years, which is part of why we keep seeing this specific combination - narrow single door, original panel, cold-weather rust - on this side of the service area.