You may also like
4IN OCT BX,STL,15.8CU,1/2KO,BAR HNG
Manufacturer Resources
Product Specs
- Construction Element:
- Drawn
- 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 NF – Frequently Asked Questions
1) How many conductors can I legally put in a 15.8 cubic inch octagon box?
The Steel City 54151 NF has 15.8 cubic inches of box volume, which is the number you use for NEC box fill. At that volume you get eight 14 AWG conductors (1.0 cu in each) or seven 12 AWG (2.25 cu in gives seven at 15.75), before you deduct for devices, clamps, and grounds. Count the fixture stud or clamp as one conductor of the largest size present.
2) What does the bar hanger on this 4 inch octagon box do, and does it come with the box?
The 54151 NF is supplied as a bar hanger box, so the hanger ships as part of the assembly. The bar spans between two joists or studs and lets you slide the box along the bar to land it exactly where the fixture needs to be, instead of nailing the box to the side of one joist. That is the usual way these go in for new-construction ceiling fixture outlets.
3) Is the 54151 NF a UL listed steel box I can use on a commercial job?
It is a steel box carrying UL file E2969, which is what a spec or inspector will want to see for a listed outlet box. The body is drawn steel (one-piece formed rather than welded seams) in a plain silver finish, and it is made in Canada.
4) Will a standard 4 inch round or octagon cover and fixture canopy fit this box?
Yes. At 4 inches diameter it takes the standard 4 inch octagon and 4 inch round covers, blank plates, and fixture canopies, which share the same two-screw pattern on 4 inch octagon boxes. Order the cover separately; the box is sold each.
5) Can I use this shallow octagon box as a junction box instead of a fixture outlet?
It works as a junction box where you have 1/2 inch raceway or cable terminations and the splice count stays inside 15.8 cubic inches. Keep in mind it must remain accessible, and the 1/2 inch depth leaves little slack room, so for more than a few splices step up to a deeper 4 inch octagon.
6) What is the exact part number to order for this Steel City 4 inch octagon bar hanger box?
Order Steel City 54151 NF. That is the manufacturer part number, and it is sold as individual boxes rather than by the carton.
How fast can I get the Steel City 54151 NF 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 NF come with a warranty?
Absolutely. The Steel City 54151 NF 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 NF?
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 54151 NF 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.