4' Concealed Vertical Rod Grooved Case Exit Device; Satin Chrome FinishA mainstay in public buildings for decades Von Duprin's safety products are known for their unparalleled quality and performance. From innovative exit devices to electronic access control solutions and accessories, Von Duprin never compromises when security is at stake. In fact, an independent study of more than 100 commercial facilities across the U. S. documented that Von Duprin exit devices require significantly less maintenance over a 30 year