For a town where most doors trace to the early 1980s, the truck carries standard torsion spring sizes for 16x7 and 9x7 double and single-car steel sectional doors - the sizes that cover the overwhelming majority of the roughly 13,041 households in Streamwood. We carry galvanized torsion cable, standard-lift and high-lift drums, and the nylon rollers that replace the steel ones most of these doors still run. What we don't carry, because it doesn't get called for often, is hardware for the older wood panel doors on side-mounted extension springs you'd find in a 1950s or 1960s neighborhood - that's a different service call with different parts, and if we hit one of those in Streamwood we'll say so rather than force a torsion fix onto extension hardware. Openers on the truck are chain and belt-drive units suited to a garage that's insulated for a cold winter climate, since this area sits in the same cold-moderate band as the rest of our service territory and a door has to seal against real cold, not just look like it does.