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 at 65db or more for 14 continuous seconds, 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. Brand new unused. 3 available Price is per item
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