413H Glynn-Johnson Door Stop Medium Duty, w/Automatic Hold-Open

Description

Glynn Johnson 413H Overhead Door Stop Medium Duty, w/Automatic Hold-Open. Automatic Hold-Open mechanism activated when the door is opened to a preset angle. Each model meets the 250,000 test cycles required for Grade 1 classification. The Hold-Open feature is not selectable, so the door is always held open.