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“
THRESHOLD FIRE RATED DOOR
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RELATED FAQS
Question
Answer
Can an electric strike be used with a surface vertical rod device on a fire-rated door?
Resolution:
Not for use in fire rated openings.:
What is the maximum glass light size on a 3 hour (180 minute) fire rated door?
Resolution:
Maximum glass light sizes for 3 hour fire doors is as follows: Wire glass - not approved for use in 3 hour fire doors. Ceramic glass: UL & ITS/WH allow one (1) light with 100 square inc...:
What is the maximum glass light size on a 90 min (1 1/2 hour) fire rated door?
Resolution:
Standard listed wire glass: one (1) light with 100 in2 per door leaf max.Firelite or other appropriately listed glass:• FM maintains one (1) light with 100 in2 per door leaf max.• UL &...:
Is the Von Duprin 6223 fire rated for pairs of wood doors?
Resolution:
The 6223-FSE electric strike is fire rated for pairs of wood doors, but check with wood door manufacturer to see if they have been approved for this application.:
Are astragals required on fire doors?
Resolution:
Astragals are required on: 3 hour fire rated pairs: Double doors - swinging in the same direction Double Egress - swinging in opposite directions Fire rated Dutch Doors Fire rated 1 3/4" t...:
What is the largest diameter hole that Steelcraft can provide for viewer preps?
Resolution:
Non fire rated doors can be furnished with a maximum 3" diameter hole for viewer preparations.Fire rated doors have a 3/4" maximum holes size unless otherwise listed by UL or ITS/WHI. Viewers must ...:
Fire Rating for AD and CO locks
Resolution:
The AD and CO locks both have a 3 hour fire door rating. Please see URL for more info. UL Fire Rating List:
What are the different door cores available?
Resolution:
The five most common cores are honeycomb, polystyrene, polyurethane, steel stiffened, and temperature rise. Honeycomb core doors are used for interior and exterior openings where high thermal...: