Stock tuned to 1988 median
We're not stocking parts for a dozen different eras of door. The median home here went up in 1988, well after the older 1960s-70s stock that dominates a lot of the wider Johnson City area, so most of what we carry on the truck is matched to doors and openers from the late 1980s through the 1990s and 2000s: torsion springs sized for steel sectional doors, chain and belt-drive opener boards, and standard galvanized roller and track sets.