Dorgard™ Black Fire Door Retainer
The Dorgard™ Black Fire Door Retainer is a simple way of retaining and releasing fire doors safely and legally, this battery-operated, self-contained device will safely and legally hold fire doors open without the risk of inadequate fire separation.
Dorgard™ Black Fire Door Retainer is a wireless acoustic door holding device that keeps fire doors open safely during everyday use and then releases them automatically when a fire alarm sounds. Its discreet black finish suits darker door designs and interior schemes while ensuring legal fire door compliance without cluttering your décor. This easy-fit solution helps maintain accessibility and ventilation while still protecting people and property.
Install the black fire door retainer at the base of a fire door in spaces that require the door to stay open throughout the day — such as corridors, lobbies, hospitals, offices and care homes. The device listens for a continuous fire alarm signal (typically above 65 dB) and, once detected, automatically releases the door so it can close under its closer and prevent fire and smoke spread. Its wireless, battery-powered design makes installation quick and eliminates the need for complex wiring.
- Product Type: Acoustic fire door retainer
- Brand: Dorgard™
- Material: ABS plastic casing
- Activation: Automatic release when fire alarm exceeds 65 dB
- Power: Supplied with 2 × C-cell batteries
- Indicator: Low battery warning feature
- Fixing Method: 4 screw surface mount
- Size (H x W x D): 205 x 195 x 45 mm
- Use: Keeps fire doors open safely and legally
- Included: Fitting template and fixings
- Description: Dorgard™ Fire Door Retainer
- Supply: Single unit
- Dorgard™ Fire Door Retainers
What is a Dorgard fire door retainer? It’s an acoustic hold-open device that automatically releases a fire door when the alarm sounds, allowing the door to close under its closer and maintain fire compartmentation.
How does the black model differ from the white one? Functionally they are the same, but the black finish offers a more discreet aesthetic where white might contrast too sharply with darker doors or interiors.
How does it detect a fire alarm? The retainer listens for a continuous alarm signal above a set threshold (around 65 dB) and releases the door after a short delay.
Do I need wiring? No — it’s battery powered and wireless, making installation simpler and quicker without modifying electrical systems.
Where is this best used? In corridors, receptions, care homes, hospitals, schools and other public spaces where fire doors need to stay open during normal activities but close in a fire.
- ✓ Acoustic fire alarm-activated retainer with automatic release
- ✓ Sleek black ABS plastic housing for modern interiors
- ✓ Battery powered — no wiring needed
- ✓ Compatible with alarms over ~65 dB
- ✓ Quick installation (approx. 5 min)
- ✓ Suitable for fire doors up to ~160 kg and ~1600 mm wide.
- ✓ Holds fire doors open safely and legally during normal use
- ✓ Releases the door automatically when an alarm sounds
- ✓ Enhances access and ventilation in busy areas
- ✓ Reduces the need for wedges or unsafe propping
- ✓ Discreet black colour blends into dark décor
- ✓ Easy retrofit to existing fire doors without construction work