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Home » Bushings & Plugs » Seals & Grommetting » Knock-Out Seals

Knock-Out Seals

  • Plugs electrical knock-outs.
  • Molded in gray color to resemble galvanized steel.
  • Six trade sizes fit 1/2 to 2" knock-out holes.
  • Locks firmly in boxes up to 1/8" thick (1/4" thick for KOS 2).
  • Installs quickly with fingertip pressure (no tool required).
  • Economical.
Locking fingers in fractional increments up to the maximum panel thickness. Approximate Head Thickness : .063" (1.6 mm)."
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