Gardner Bender Metal Knockout ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.70
$9.70
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Gardner Bender Metal Knockout Seal 3/8" Thread 16-Gauge Steel with Zinc-Plated Hardware

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Model: KO706

In Stock (leaves warehouse same day if ordered before 3pm ET)

$58.70
$9.70
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Gardner Bender Metal Knockout Seal 3/8" Thread 16-Gauge Steel with Zinc-Plated Hardware

Professional knockout sealing solution for electrical enclosures

The Gardner Bender metal knockout seal delivers reliable closure for unused knockouts in electrical boxes and enclosures. Constructed from 16-gauge cold-rolled galvanized steel with 3/8" thread compatibility, this professional-grade seal features zinc-plated screw and bar components for enhanced corrosion resistance and long-term durability in demanding electrical applications.

Professional Features & Benefits

  • 16-Gauge Steel Construction: Provides robust structural integrity and reliable sealing performance in electrical enclosures.
  • 3/8" Thread Compatibility: Ensures proper fit and secure installation in standard knockout openings.
  • Embossed Self-Centering Design: Facilitates quick and accurate positioning for efficient installation from inside or outside the box.
  • Zinc-Plated Hardware: Delivers superior corrosion resistance for extended service life in various environmental conditions.
  • Cold-Rolled Galvanized Steel: Offers rust-proof protection and maintains structural integrity over time.
  • Single Screw Installation: Simplifies mounting process while providing secure retention in place.
  • Size and Catalog Marking: Enables easy identification and proper installation verification.

Technical Specifications

  • Each In Package Height In: 3
  • Each In Package Length Depth In: 1.13
  • Each In Package Weight Oz: 24
  • Each In Package Width In: 3

Professional Applications

  • Electrical Panel Modifications
  • Junction Box Installations
  • Commercial Electrical Systems
  • Industrial Control Panels
  • Residential Service Upgrades
  • Maintenance and Retrofit Projects

Why Choose Gardner Bender Quality?

Gardner Bender knockout seals combine professional-grade materials with practical design features to deliver dependable performance in electrical applications. The rust-proofed galvanized steel construction and zinc-plated hardware ensure long-term reliability, while the embossed self-centering design and clear marking facilitate efficient installation and maintenance.

Manufacturer Resources

Product Specs

Each In Package Height In :
3
Each In Package Length Depth In :
1.13
Each In Package Weight Oz :
24
Each In Package Width In :
3

Gardner Bender KO706 – Frequently Asked Questions

1) Can a knockout seal be installed from outside the box, or do I need access to the inside of the panel?
Either way works. The embossed self-centering design lets you position and set the seal from inside or outside the box, and it holds with a single screw. That matters on a live panel or a tight junction box where you cannot get a hand behind the opening.
2) Will a galvanized steel knockout seal hold up in a damp or outdoor enclosure?
The body is 16-gauge cold-rolled galvanized steel and the screw and bar hardware are zinc plated, both for corrosion resistance. That combination is aimed at long service life in enclosures exposed to moisture and varying conditions. It is a mechanical blank-off, not a gasketed watertight fitting, so for a rated wet-location enclosure confirm the closure method your enclosure listing requires.
3) Is a metal knockout seal better than a plastic snap-in plug for a commercial panel?
For commercial and industrial work, the steel seal is the one inspectors expect: 16-gauge galvanized steel with a zinc-plated screw and bar gives you a mechanically fastened closure rather than a friction snap-in, and it matches the sheet metal of the enclosure it closes. Snap-in plastic plugs are quicker on residential boxes but do not give the same structural closure in control panels or service equipment.
4) Does the knockout seal come with the screw, or do I need to supply hardware?
The screw and bar come with it, both zinc plated. One screw tightens the bar against the inside of the sheet metal and clamps the seal in place, so nothing else is needed to close the opening.
5) What jobs is the Gardner Bender KO706 steel knockout seal used for?
It closes unused knockouts left over after panel modifications, junction box work, control panel builds, and residential service upgrades. Maintenance and retrofit crews keep them on hand because pulling a conduit or a device out of an enclosure always leaves an open hole that has to be blanked off.
6) How much does a package of Gardner Bender KO706 knockout seals weigh and how big is the box?
The package runs 3 inches high by 3 inches wide with a 1.13 inch length/depth and weighs 24 ounces. Useful if you are stocking a truck bin or a shop drawer and need to know what footprint to allow.
How fast can I get the Gardner Bender KO706 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Gardner Bender KO706 come with a warranty?
Absolutely. The Gardner Bender KO706 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Gardner Bender KO706?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Gardner Bender KO706 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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