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  • Zinc Plated Steel Thru-Bolt Sleeve with Machine Screw
  • Fits 1-3/4" to 2" Thick Doors
  • Meets Requirements of NFPA 80 for Use on Fire Doors
  • Use to Fill Holes in Wood or Steel Fire Doors to Protect Label Compliance

Zinc Plated Steel Fire Door Thru-Bolts 3/8

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