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FB41- Automatic Flush Bolts- Wood Doors- Top Bolt Only
Fully Automatic—inactive door is latched, bolts are extended when active door closes, door is unlatched bolts retract when active door is opened.
Low Actuation Forces—Top Bolt Has No Spring Tension, Non-handed.
Bolt throw is 3/4" with a 7/8" vertical adjustment, Bolt backset is 3/4"
Meets ANSI A156.3 Type 25, UL Listed 90 Minute Fire Doors 8'0" x 8'0" FB41- Automatic Flush Bolts- Wood Doors- Top Bolt Only Fully Automatic—inactive door is latched, bolts are extended when active door closes, door is unlatched bolts retract when active door is opened.