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Manufacturer Resources
Product Specs
- Construction Element:
- Drawn
- Country Of Origin:
- United States
- Product Type:
- Box/housing for built-in mounting in the wall/ceiling
- Selling Unit Of Measure:
- each
- Standards:
- UL E2969
- Volume:
- 15.8 in³
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Electrical Boxes
- Product Type2:
- Octogonal Boxes
- Product Size:
- 4 Inches Diameter x 1/2 Inch depth
- Product Color:
- Silver
- Product Material:
- Steel
Steel City 54151 NL – Frequently Asked Questions
1) How many conductors can I legally put in a 15.8 cubic inch octagon box?
The Steel City 54151 NL holds 15.8 cubic inches, which is the number you use for NEC box fill. At 2.00 cubic inches per 14 AWG conductor that supports 7 conductors; at 2.25 per 12 AWG it supports 7; at 2.50 per 10 AWG it supports 6. Remember that clamps, a fixture stud or hickey, and all grounds each count against that total, so a typical ceiling box with a device yoke and a ground will land well under those raw counts.
2) Is this 4 inch octagon box deep enough for a ceiling fixture with a lot of wire in it?
It is a shallow box: 4 inches across and 1/2 inch deep, drawn in one piece from steel. That depth is what you use when the joist bay or the slab will not give you room for a 1-1/2 inch deep box. For a light fixture with several cables landing in it and a canopy full of splices, a deeper 4 inch octagon gives you more working room and more cubic inches to fill.
3) Does the Steel City 54151 NL come with a bracket for mounting to the stud or joist?
Yes. The 54151 NL is the bracket version of this 4 inch octagon, so it nails or screws directly to the face of a joist or stud instead of needing a separate bar hanger or box support. If you are mounting between joists rather than against one, you want a bar hanger assembly instead.
4) Can I use the Steel City 54151 NL in an exposed outdoor or damp location?
No. This is a drawn steel box in a plain silver finish intended for built-in mounting inside a wall or ceiling, dry locations. For wet or damp exposure you need a cast or nonmetallic weatherproof box with gasketed cover.
5) Do I need to order a cover or ring separately for this 4 inch octagon box?
Yes. The box is sold as a bare box, each, with no cover. Finish it with a 4 inch round or octagon blank cover, or a plaster ring if you are bringing it out to a finished ceiling surface. Fixture mounting screws typically come with the fixture canopy or crossbar.
How fast can I get the Steel City 54151 NL 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 54151 NL come with a warranty?
Absolutely. The Steel City 54151 NL 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 54151 NL?
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product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Steel City 54151 NL from ZenSupply?
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