4SQ RNG 2G, 1-1/4IN RSD, 15CU
Manufacturer Resources
Product Specs
- Product Group:
- Boxes & Enclosures
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Pre-Galvanized
- Product Material:
- Steel
- Product Size:
- 4 Inches
- Product Color:
- Silver
- Department:
- Electrical
- Country Of Origin:
- United States
- Number Of Knockouts:
- 0
- Standards:
- UL E2969
- Product Type2:
- Outlet Box Covers
- Product Subgroup:
- Electrical Boxes
- Product Shape:
- Square
- Product Type:
- Raised Ring
Steel City 52C21-25R – Frequently Asked Questions
1) Will a Steel City 2-gang plaster ring fit a standard 4-inch square box?
Yes. This is a 4 inch square mud ring, so it mounts to the two ears of any standard 4 inch square steel box and reduces the opening to a 2-gang device pattern. The ring itself is 4 inches square, steel, and pre-galvanized.
2) Is this Steel City 4-square ring UL listed for commercial work?
The ring carries UL file E2969, which is what an inspector or a spec writer on an institutional job will want to see on the box cover. It is also made in the United States.
3) Do I need a separate cover plate with this 2-gang mud ring?
Yes. The ring is a device ring, not a finish plate. It gives you a 2-gang opening to mount two devices to, and a standard 2-gang wall plate goes over it once the devices are in. The ring is a steel outlet box cover, pre-galvanized and silver in color, so it is meant to be concealed by the finish plate.
4) Is the Steel City 52C21 ring sold individually or in a carton?
It is sold each, so you can order the exact count your job needs rather than a full box quantity. Useful for MRO and small punch-list orders as well as rough-in bulk.
5) Will a pre-galvanized steel ring hold up in a damp or exterior location?
The finish here is pre-galvanized steel, which is the standard finish for dry and normally damp interior commercial work such as framed walls, back-of-house, and concealed runs. For wet locations or corrosive environments, use a cover and box system rated for that service instead; pre-galvanized is not a corrosion-resistant finish in the way hot-dip or non-metallic is.
How fast can I get the Steel City 52C21-25R 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 52C21-25R come with a warranty?
Absolutely. The Steel City 52C21-25R 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 52C21-25R?
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 52C21-25R 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.