The truck is stocked for what actually shows up in Heathrow driveways: torsion springs sized for both single and double sectional doors, standard steel panel sections, and chain and belt-drive opener units that match what's already bolted to a late-1990s header. Because insulated and glass-panel doors come up more often here than in some of the older parts of the service area, we also carry insulated door sections and the hardware that goes with heavier panels - stronger springs, in most cases, since an insulated door weighs more than a bare steel one. What we don't carry on the truck is custom glass inserts or specialty finishes; those get special-ordered once you've picked a style, and that adds lead time we can't shorten. If your garage was built close to that 1998 median and the opener's never been swapped, bring that up when you call - it usually means the opener is close to the end of its working life even if the door itself is sound.