Nineties era hardware
A house built in the early '90s almost always shipped with a torsion spring system rather than the older extension-spring setup, and it likely got a chain-drive opener as standard equipment. If nobody's touched that hardware since the house was framed, you're looking at a spring rated for 1990s door weight, a steel or nylon roller that's outlived its grease, and an opener logic board old enough that replacement parts for it are getting hard to source new.