Insulated panel specifications
You're mostly looking at factory-insulated steel sectional doors, often on 3-car bays, with galvanized torsion springs sized for the extra weight of foam-core panels rather than the light single-layer doors common on 1980s builds. That's a meaningfully different door to service than what we see on the Greenwood Village side of our territory, where the median build year sits around 1980 and a lot of doors are lighter, non-insulated steel or old wood.