Includes device, two floor plates and fixings The Dorgard is a reliable solution that allows you to hold your fire doors open at any angle for improved ventilation, access, and convenience. In the event of a fire, the device will automatically release enabling the fire door to close by responding to the sound of a fire alarm. When the alarm sounds, the Dorgard will release allowing the fire door to close normally. This fire door retainer by Fireco uses an easy foot-operated setting and release system.