Can electric strikes be used on fire-rated doors?
Yes, but only if the specific electric strike model is listed for use on fire-rated assemblies at the required rating. The electric strike must appear in the UL or WHI listing for that fire-rated assembly configuration. Not all electric strikes carry fire ratings, so verification is required for each product.
Do electromagnetic locks work on fire-rated doors?
Electromagnetic locks (maglocks) can be used on fire-rated doors when they are listed for that application and integrated with the fire alarm system for automatic release. The maglock must release upon fire alarm activation to allow egress, and the installation must comply with the applicable building and fire codes.
What is a power transfer, and does it affect fire ratings?
A power transfer is a device that routes electrical wiring from the frame to the door, typically through the hinge side. Power transfers must be listed for use on fire-rated assemblies. The transfer device and its installation method must not compromise the fire rating of the door or frame.
How do I verify that electrified hardware is listed for a fire-rated assembly?
Check the UL Product iQ database or WHI Certified Listings Directory for the specific hardware model. The listing will indicate which fire ratings the product is approved for and any conditions of use. Cross-reference the hardware manufacturer's fire-rating documentation with the door and frame listing.
What fire ratings are available for assemblies with electrified hardware?
Fire-rated assemblies with electrified hardware are available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. However, the range of approved electrified hardware narrows at higher fire ratings. Verify specific product availability for the required rating during the specification phase.