Lawrence Hardware

Universal Automatic Flush Bolts LHFB820


  • 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 and bottom bolts 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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