When are flush bolts used

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Question
Answer
When using 98/9927 with flush transom above: You will need to use a 260U strike for flush transom applications OR a 260U-F strike for 98/9927-F fire rated device.
The 296G is is not a model number but rather the UL listing number.
4640 Flush Ceiling mounting requires a minimum 1-3/4" Header, and a minimum 3-3/4" Top Rail on the door.
Backset
hardware; Manual, automatic, constant
The 4040 Rw/PA can be mounted 3 different ways. The 4040-18 drop plate is used for the regular pull side mount. The 4040-18TJ drop plate is used for the top jamb push side mount. The 4040-18P...
Ives SB360 surface bolt at top and bottom are the only flush bolts approved for use on H-Series hurricane FBC or NOA applications? The only approved latching hardware for inactive leaf of pairs w...
NON Fire Rated doors would use the 1609 strike applied to the inactive leaf with flushbolts.  This may NOT be used on Fire Rated openings.