Steel City RB-121-4 3/4 X 1/2 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$100.68
$67.51

Steel City RB-121-4 3/4 X 1/2 REDUCE BUSHING 4 PK

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Model: RB-121-4
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$100.68
$67.51
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3/4 X 1/2 REDUCE BUSHING 4 PK

Manufacturer Resources

Product Specs

Number Of Batteries:
0
Product Type:
Reducing Bushing
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Fittings
Product Type2:
Reducing Bushing
Product Size:
3/4 to 1/2 Inch
Product Material:
Steel

Steel City RB-121-4 – Frequently Asked Questions

1) What size does the Steel City RB-121-4 reducing bushing adapt down to?
The Steel City RB-121-4 reduces a 3/4 inch opening down to 1/2 inch. So if you've got a 3/4 inch knockout or hub and you're running 1/2 inch conduit into it, this is the piece that closes the gap.
2) I have a 1/2 inch knockout and need to run 3/4 inch conduit. Will this work?
No. The RB-121-4 works the other direction: it fits a 3/4 inch opening and reduces it to 1/2 inch. To go the other way you'd need to punch or ream the knockout up to 3/4 inch, since a reducing bushing only steps a larger hole down to a smaller trade size.
3) How many reducing bushings come in the Steel City RB-121-4?
Four per pack. The RB-121-4 is sold as a 4 pack of 3/4 to 1/2 inch reducing bushings, which is usually enough to cover a small panel or a couple of boxes without buying bulk.
4) Is the RB-121-4 reducing bushing steel or plastic?
Steel. The RB-121-4 is a steel reducing bushing, not a plastic or insulated type, so use it where you need a metal-to-metal reduction in a conduit run or at a box knockout.
5) What is the Steel City part number for a 3/4 to 1/2 inch reducing bushing?
RB-121-4 is the Steel City catalog number for the 3/4 to 1/2 inch steel reducing bushing supplied in a 4 pack. That's the number to quote when matching what's already on the job.
How fast can I get the Steel City RB-121-4 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 Steel City RB-121-4 come with a warranty?
Absolutely. The Steel City RB-121-4 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 Steel City RB-121-4?
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 Steel City RB-121-4 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.