2004-era factory door replacement
Here the median build year runs closer to 2004, which means most garage doors going in now are replacements for factory doors that are only 15 to 20 years old, not the worn-out one-piece slab doors we pull out of older neighborhoods to the west. If you're set on doing this yourself: a standard 16-foot double door on torsion springs weighs more than most people guess, and winding a torsion spring without the right bars has put people in the ER.