Open Product Spec Sheet

Heyco Knock-Out Seals • Plug electrical knock-outs.
• Molded in silver gray color to resemble galvanized steel.
• Install quickly with fingertip pressure (no tool required).
• Economical.
• Multiple trade sizes fit 1/2˝ to 2˝ knock-out holes.
• Lock firmly in boxes up to 1/8˝ thick, except for Part Number 4002 (KOS 2) and Thick Panel Knock-Out Seals (KOST’s) which lock firmly in boxes up to 1/4˝ thick.
• Locking fingers in fractional increments up to the maximum panel thickness.
• Approximate Head Thickness: .062˝ (1,6 mm). Thickness may vary.

Contact us today to order.  317.883.6700