Per the 2016 edition of
NFPA 80, the only restrictions for using spring hinges in a UL Listed fire door application are “at least two shall be provided”
per 6.4.3.1.1.2, must be “Grade 1” per 6.4.3.1.2.2, and “should be adjusted to
achieve positive latching when allowed to close freely from an open position of
30 degrees” per A.6.4.1.4. NFPA has no restrictions on door size,
other than the general statement to “consult the door and hardware
manufacturer’s specific listings.”
The following would be Ives' 3CB1 restrictions:
Other than the NFPA 80 code
restrictions we have to follow, Ives restricts the 3SP1 to 3 hinges for 3' x 7' x
150lbs. max UL Listed for fire door.
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