If your house dates to that 1959 era and you're calling about a new door instead of a repair, it's usually one of a few things: a single-layer steel door that's dented or rusted through at the bottom panel, a track that's pulled slightly out of alignment as the original framing settled over the decades, or an opening that's visibly narrower than a neighbor's newer door down the street. Sometimes it's simpler - the door still works, but it's loud, uninsulated, and costs you comfort every winter. None of these mean something's wrong with the house. They mean the door's original to a build era that predates current standard sizing and insulation expectations, and it's at the end of its useful life.