A door bought off a shelf without checking the opening first is the single most common failure we see in a town built mostly in 1966. Garages from that era were framed to the door sizes common then, and a lot has shifted since - track specs, spring tension ratings, opener mounting. Drop in a 2024-spec door on 1966 framing without adjusting the hardware and you get a door that binds on the track, an opener straining against the wrong spring weight, or trim that doesn't sit flush.
The region sits in a cold, moderate climate band, which matters for seal choice and insulation rating, but it's the age of the opening, not the weather, that causes most of the installs we get called back to fix after someone else did them cheap. We size the spring to the actual door weight and the actual headroom in the garage in front of us, not to a generic chart.