Lawrence Hardware

Universal Self Latching Flush Bolt LHFB780 (FB710+FB810)


  • cUL/UL listed for 3 hour fire rated doors
  • UL 10B  and 10C fire tests for door assemblies
  • ANSI/BHMA A156.3 
  • Finishes: US3, US10B and US26D


  • Simple Door preparation
  • Easy Installation
  • Requires two (2) 1-1/8” Diameter holes and simple rectangular faceplate preps
  • Dual use for metal and solid wood doors
  • No cut outs on inactive door
  • Non-handed
  • Ideal for wood veneer doors as smaller profile adds stability to the door 


  • These bolts are installed at the top and bottom of fire rated doors on the inactive leaf
  • Top bolt (FB710) automatically engages the curved lip strike every time the inactive door is closed.  The bolt remains engaged until it is retracted by depressing the plunger on the face plate
  • Bottom bolt (FB810) will automatically retract when the active door is opened



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Lawrence Hardware
676 Petrolia Road, Toronto, ON M3J 2V2
Business Hours

Mon - Thur: 8:30am to 5:00pm
Fri: 8:30am to 1:00pm

Mon - Thur: 7:00am to 4:00 pm
Fri: 7:00am to 1:00pm
Shipping & pickup can be arranged based on these hours.

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