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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States
- Number Of Knockouts:
- 0
- Selling Unit Of Measure:
- each
- Standards:
- UL E2969
- Surface Finishing:
- Pre-Galvanized
- Volume:
- 12 in³
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Box Covers
- Product Type2:
- Outlet Box Covers
- Product Size:
- 4-11/16 Inches
- Product Color:
- Silver
- Product Shape:
- Square
- Product Material:
- Steel
- Product Type:
- Plaster Ring
Steel City 72 C 19 – Frequently Asked Questions
1) Will the Steel City 72 C 19 plaster ring fit a 4-11/16 inch square box?
Yes. The 72 C 19 is sized for 4-11/16 inch square outlet boxes and mounts to the box ears in the standard pattern. It is a two-gang ring with a 1 inch raise, so it brings the device plane forward 1 inch to meet finished drywall or plaster of that depth.
2) How much box fill does a 1 inch raised two-gang plaster ring add?
The 72 C 19 adds 12 cubic inches of volume, which counts toward your box fill calculation on top of the box's own cubic capacity. That extra 12 in3 is often what lets a crowded 4-11/16 square pass fill with two devices and their conductors.
3) What drywall thickness does a 1 inch raised plaster ring suit, and when should I use a shallower one instead?
A 1 inch raise is for thick wall assemblies, double layer drywall, or plaster over lath, where the box sits a full inch behind the finished face. On a single layer of 1/2 or 5/8 inch gypsum a 1 inch ring will stand proud of the wall and the device plate will not sit flat, so step down to a 1/2 or 5/8 inch raised ring for that build. The 72 C 19 is the 1 inch, two-gang version for 4-11/16 square boxes.
4) What is the difference between the Steel City 72 C 19 plaster ring and the Allied Moulded 9345?
The Steel City 72 C 19 is a steel, pre-galvanized plaster ring sized for a 4-11/16 inch square box with a two-gang opening and 1 inch raised depth, adding 12 cubic inches of box volume. The Allied Moulded 9345 is a PVC raised plaster ring in the FiberglassBox series with a one-gang opening. So the choice comes down to a two-gang steel ring over a 4-11/16 square box versus a single-gang nonmetallic ring, which is the one to pick when you are working with a fiberglass or PVC box and a single device.
5) Is this plaster ring UL listed for commercial work?
The 72 C 19 ring carries UL file E2969, which is the listing inspectors look for on steel outlet box covers in commercial and institutional installs.
6) Does the Steel City 72 C 19 ring have knockouts for conduit?
No knockouts on this ring, it has zero. It is a flat two-gang device ring only, so all conduit entries have to come through the 4-11/16 square box behind it.
7) For a nonmetallic rough-in, is a steel plaster ring like the Steel City 72 C 19 the right choice?
The 72 C 19 is steel with a pre-galvanized finish, intended to pair with steel 4-11/16 inch square boxes. On a nonmetallic rough-in, the Allied Moulded 9345 is the matched part - it is a PVC raised plaster ring built for the FiberglassBox line - though it serves one gang rather than two.
8) Is this steel plaster ring suitable for a damp location or exterior wall cavity?
The 72 C 19 is steel with a pre-galvanized finish, which gives it corrosion resistance for normal dry and concealed interior work. Pre-galvanized steel is not a wet-location or outdoor rated assembly on its own, so for exposed exterior work use a weatherproof box and cover rather than a plaster ring.
9) Is the Steel City 72 C 19 sold individually or by the box?
Pricing and ordering are per each, so you can buy a single ring or as many as the job takes without a carton minimum.
How fast can I get the Steel City 72 C 19 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 72 C 19 come with a warranty?
Absolutely. The Steel City 72 C 19 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 72 C 19?
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product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Steel City 72 C 19 from ZenSupply?
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every order.
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