B-Line Eaton series box suppor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,496.59
B-Line Eaton series box support fasteners, Communication and low , 1" Height, 1" Length, 1" Width, 0.5lbs, 0.75" Raise, Uni-Mount box support/cover pl

B-Line Eaton series box support fasteners, Communication and low , 1" Height, 1" Length, 1" Width, 0.5lbs, 0.75" Raise, Uni-Mount box support/cover pl

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Model: BB40-12
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,496.59
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Eaton B-Line series box support fasteners, Communication and low voltage, 1" Height, 1" Length, 1" Width, 0.5lbs, 0.75" Raise, Uni-Mount box support/cover plate mounting brackets, Single gang, Pre-galvanized

Manufacturer Resources

Product Specs

Certifications:
UL/CUL listed
Product Height:
1 in
Product Length Depth:
1 in
Product Weight:
.5 lb
Product Width:
1 in
Department:
Electrical
Product Finish:
Pre-galvanized
Product Size:
3/4 inch raise
Product Material:
Steel

B-LINE BB40-12 – Frequently Asked Questions

1) What does the B-Line BB40-12 Uni-Mount bracket actually do on a low voltage rough-in?
The BB40-12 is a single gang box support and cover plate mounting bracket from the Eaton B-Line series, built for communication and low voltage work. It supports the box in the wall opening and gives the cover plate something to fasten to, with a 3/4 inch raise built in so the box sits proud of the framing for finished drywall or panel thickness.
2) Will the BB40-12 work for a two gang opening?
No. It's a single gang bracket only. For a two gang or larger opening you need a multi-gang support bracket sized to that box.
3) Is the B-Line BB40-12 UL listed for inspected commercial work?
Yes. The BB40-12 box support bracket is UL/CUL listed, which is what an inspector on a commercial or institutional job will look for on low voltage box support hardware.
4) Why would I want the 3/4 inch raise version instead of a flush bracket?
The 3/4 inch raise pushes the ring forward from the stud face so the box edge lands flush with thicker finished wall material. If your finish is standard 1/2 inch drywall, a 3/4 inch raise sets the box too far forward and you want a shallower raise instead.
5) What is the BB40-12 bracket made of, and will the finish hold up in a damp mechanical room?
Steel with a pre-galvanized finish. That zinc coating handles ordinary interior humidity and concealed wall or mechanical space conditions. For direct exposure to weather or corrosive wash-down, specify a hot-dip galvanized or stainless support instead.
6) Can I use the BB40-12 for line voltage receptacle boxes, or is it low voltage only?
Eaton lists this bracket under communication and low voltage applications, and that is the use it is specified for. If you are supporting a line voltage device box, order a bracket rated for that application rather than assuming this one covers it.
7) What part number do I quote to order this B-Line box support bracket?
Order it as Eaton B-Line BB40-12. That is the manufacturer part number for the single gang Uni-Mount box support and cover plate bracket with the 3/4 inch raise, pre-galvanized steel.
How fast can I get the B-LINE BB40-12 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 B-LINE BB40-12 come with a warranty?
Absolutely. The B-LINE BB40-12 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 B-LINE BB40-12?
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 B-LINE BB40-12 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.
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