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150-UL 1-1/2 Hour-Walls, 3 Hours-Ceilingsproducts6Description: UL Listed for 1-1/2 Hours in Walls. Warnock-Hersey Listed for 3 Hours in Ceiling. Interchangable for Flush Key or Knurled Knob. Available with Drywall or Plaster Bead Framing. Materials: 20 Ga. teel Door, 16 Ga.Steel Frame Finish: Phosphate Dipped, Prime Coat Finish Lock: Interchangable for Flush Key or Knurled Knob. Mortise Lock Prep Available.
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