commercial overhead doors
https://getfirerateddoorsstore.clearhavendigest.com/posts/when-every-second-counts-understanding-fire-rated-doors
Commercial overhead doors are the large, segmented panels that roll up and out of sight, found at loading docks, warehouses, and auto shops. They're built to handle daily banging and scraping from forklifts and pallets, with springs and cables that need regular greasing to keep from snapping. Unlike home garage doors, these are often wider and heavier, designed for constant use in freezing weather or dusty environments. A six-inch gap at the bottom can waste heat and let rodents in, so maintena…