ConstructionThe centerpiece of the IDI product line. Vertical lift products are the doors of choice by automotive and heavy industry. Available with single or multi-leaf configurations, these doors are clad with heavy gauge face sheets and fabricated with a wide range of options. Counterweighted, structural steel framing 14-gauge exterior/16-gauge interior steel cladding Meets all wind loading requirements 3" minimum thickness MaintenanceMaintenance Maintenance free hardware with factory sealed ball bearing rollers Shop-primed exposed and concealed surfaces Delivers long service life with minimum maintenanceOperation Safety sensor edge with series circuit reliability Auxiliary hand-chain operation Includes electric motors, brakes, enclosed gearboxes, and limit switches