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Cranford Controls Door Retainers
Available in a flame retardant, low profile ABS plastic body and a single gang metal bodied version, with a spring loaded release pin mounted centrally, ensures that on power off the fire door is pushed safely and effectively away from the keeper plate.
Frequently Asked Questions About Cranford Controls Door Retainers
Looking for reliable fire door retention solutions? Explore our most commonly asked questions about Cranford Controls Door Retainers, their operation, installation requirements and suitability for fire alarm systems.
What is a Cranford Controls Door Retainer?
A Cranford Controls Door Retainer is a fire door holding device designed to keep fire doors open during normal use. When the fire alarm activates, the retainer automatically releases, allowing the fire door to close and help contain smoke and fire.
Why are door retainers used in commercial buildings?
Door retainers improve accessibility and day-to-day movement throughout a building while maintaining fire safety compliance. They are commonly used in schools, care homes, hospitals, offices and apartment buildings where safely held-open fire doors are beneficial.
How do Cranford Controls Door Retainers operate?
The devices are connected to a fire alarm system and use an electromagnet to hold the fire door open. Upon receiving a fire alarm signal or loss of power, the magnet releases and the door closes under the action of the door closer.
Are Cranford Controls Door Retainers suitable for fire alarm integration?
Yes. Cranford Controls Door Retainers are specifically designed for integration with fire detection and alarm systems, helping ensure fire doors respond correctly during an alarm condition.
Can door retainers be installed on existing fire doors?
In many cases, yes. Door retainers can often be retrofitted to existing fire door installations, provided the fire door, closer and associated hardware are suitable and compliant with applicable fire safety regulations.
Where are Cranford Controls Door Retainers commonly installed?
They are frequently installed in hospitals, educational facilities, sheltered housing, care homes, hotels, offices and public buildings where doors need to remain open without compromising fire protection.
Do Cranford Controls Door Retainers require regular testing?
Yes. As part of ongoing fire alarm maintenance and fire safety procedures, door retainers should be routinely tested to ensure they release correctly when the fire alarm system operates.
Where can I buy Cranford Controls Door Retainers?
Firesense stocks a range of
Cranford Controls Door Retainers
for professional fire alarm installers, maintenance providers and facilities managers across the UK.