The ASHRAE Duct Fitting Database v60 arrived as a free, downloadable package that quickly became the go‑to reference for HVAC engineers worldwide. Below is a vibrant walk‑through of its evolution, features, and real‑world impact. 1. Arrival & First Impressions When the installer launched the “Full Install” package, the first thing users noticed was the sleek, modern UI—far removed from the clunky tables of earlier releases. The installer guided users through a painless setup: a single click to accept the license, a brief progress bar, and then the database opened in a clean, searchable window.