Fruitport's climate band is classified as severe cold, and a steel panel that's been through roughly sixty winters of freeze-thaw cycling develops stress fractures at the hinge points long before the paint tells you anything is wrong. On a house built close to 1963, it's common for one or two panels - usually the bottom section, which takes the brunt of plow splash and impact - to have been swapped out at some point while the rest of the door is original. That mismatch is itself a clue: if a previous repair used a slightly different panel profile, the door may be racking unevenly, which speeds up wear on the replacement section too. With 458 households in Fruitport and a housing stock mostly dating to the early-to-mid 1960s, this pattern of one newer panel bolted into an otherwise original door shows up often enough that we check for it before quoting a single-panel swap.