Gardner Bender KO705 Knockout ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$57.00
$7.81
Image coming soon

Gardner Bender KO705 Knockout Seal - 16-Gauge Galvanized Steel with 3/8" Thread

(No reviews yet) Write a Review

Model: KO705

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

$57.00
$7.81
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Gardner Bender KO705 Knockout Seal - 16-Gauge Galvanized Steel with 3/8" Thread

Professional knockout sealing solution for electrical enclosures

The Gardner Bender KO705 Knockout Seal delivers reliable closure for unused knockouts in electrical boxes and enclosures. Constructed from rust-proofed, cold-rolled galvanized steel with zinc-plated hardware, this 16-gauge knockout seal features a 3/8" thread design for secure installation. The embossed construction enables quick self-centering in unused knockouts, while clear size and catalog markings ensure proper identification during installation.

Professional Features & Benefits

  • 16-Gauge Galvanized Steel Construction: Provides durable, long-lasting protection against corrosion and environmental exposure in electrical applications.
  • 3/8" Thread Design: Ensures secure, threaded engagement for reliable sealing performance in standard knockout openings.
  • Rust-Proofed Cold-Rolled Steel: Delivers superior material integrity and resistance to oxidation in demanding electrical environments.
  • Zinc-Plated Screw and Bar: Offers enhanced corrosion resistance for all hardware components, extending service life.
  • Embossed Self-Centering Design: Facilitates quick, accurate positioning in unused knockouts for efficient installation.
  • Size and Catalog Markings: Provides clear identification for proper selection and installation verification.
  • Single Screw Installation: Simplifies mounting process with one-screw retention system for fast, secure placement.

Technical Specifications

  • Each In Package Height In: 4
  • Each In Package Length Depth In: 6
  • Each In Package Weight Oz: 18.1
  • Each In Package Width In: 3.5

Professional Applications

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

Why Choose Gardner Bender Quality?

Gardner Bender knockout seals combine professional-grade materials with proven design for reliable electrical enclosure sealing. The galvanized steel construction and zinc-plated hardware ensure long-term performance, while the embossed self-centering feature and clear markings support efficient installation in professional electrical applications.

Manufacturer Resources

Product Specs

Each In Package Height In :
4
Each In Package Length Depth In :
6
Each In Package Weight Oz :
18.1
Each In Package Width In :
3.5

Gardner Bender KO705 – Frequently Asked Questions

1) Does the 3/8 inch on the Gardner Bender KO705 refer to the knockout size?
No. The 3/8 inch on the KO705 is the thread size of the screw that draws the seal tight, not the diameter of the knockout it closes. Each seal is marked with its size and catalog number on the face, so if you are matching to a hole already punched in a panel, read the size marking on the part rather than the thread callout.
2) Is the KO705 knockout seal rust resistant enough for a damp or industrial enclosure?
Both the body and the hardware are protected. The seal itself is rust-proofed cold-rolled galvanized steel in 16 gauge, and the screw and bar are zinc plated, so there is no bare steel fastener sitting in the assembly. That covers normal commercial and industrial enclosure exposure. For anything washdown or outdoor-wet rated, the enclosure rating governs, not the plug.
3) Do I need a gasket or sealant with a knockout seal, or just the plug?
The KO705 ships as a complete closure: body, zinc-plated screw, and bar. No separate gasket, locknut, or sealant is listed as part of it. You tighten the one screw and the bar clamps the seal against the inside of the panel wall. If your enclosure carries a liquid-tight rating you want to preserve, use a sealing-type closure specified for that rating instead.
4) What part number do I give my distributor for this Gardner Bender knockout seal?
Order it as Gardner Bender KO705. That is the manufacturer part number and the only configuration the model covers, so there is no finish or size suffix to add to the order.
5) Can one person install a knockout seal in a live panel enclosure without pulling the deadfront apart?
The design is built around that. The embossed shoulder self-centers the seal in the open knockout so it holds position while you start the fastener, and retention is a single screw rather than a nut on the back side. You still need rear access for the bar to swing behind the panel wall, and standard practice is to de-energize before working inside an enclosure.
How fast can I get the Gardner Bender KO705 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 KO705 come with a warranty?
Absolutely. The Gardner Bender KO705 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 KO705?
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 KO705 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.
!