Getting to Know the Von Duprin 3347 Exit Device
If you've spent any time looking at commercial door hardware lately, you've probably run across the von duprin 3347 more than a few times. It's one of those industry staples that shows up in schools, hospitals, and office buildings because, quite frankly, it just works. While a lot of people might see a "panic bar" and think they're all the same, anyone who has to install or maintain them knows that the details matter a lot. ...