difference between constant latch and automatic flush bolt

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The 9550 series Senior Swing WILL NOT work on a pair of doors with auto flush bolts. The 9560 series Senior Swing and a sequence module are required when used on an pair of door with auto flush b...
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.
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...
The 296G is is not a model number but rather the UL listing number.
hardware; Manual, automatic, constant
LR is the regular/ standard latch and PL is Pullman/ES (Electric Strike) latch for the Von Duprin 8827 exit device.
 ES (electric strike) latch is only used with the 8827 less bottom rod on a non fire rated exit device with a 6111 electric strike.