Centaur 4" Fan Support Deep Bo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$538.97
Centaur 4" Fan Support Deep Boxes (2-1/8" Deep) per 12

Centaur 4" Fan Support Deep Boxes (2-1/8" Deep) per 12

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Model: CM-FSDB-SC

In Stock (leaves warehouse same day if ordered before 3pm ET)

$538.97
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Centaur deep fan support boxes are engineered for secure ceiling fan or fixture installation, offering a robust 2-1/8" depth to accommodate heavier loads and larger electrical connections. These 4" round boxes are constructed from durable non-metallic materials and come in multiple mounting configurations including standard bar hanger, new work bar hanger, old work bar hanger, and screw clamp (SC) options. Suitable for both new construction and retrofit applications, these fan-rated boxes ensure easy installation and long-lasting support.

SKU Diameter (Ø) Width Height (Depth)
CM‑FSDB‑FB (Round, Bar) 4″ — (round box) 2‑1/8″ (2.125″)
CM‑FSDB‑NBH (Octagon New Work) 4″ — (octagon box) 2‑1/8″
CM‑FSDB‑OBH (Round Old Work) 4″ — (round box) 2‑1/8″
CM‑FSDB‑SC (Octagon Screw Clamp) 4″ — (octagon box) 2‑1/8″

Product Specs

Product Type:
Fan Support Box
Insulated:
Non-Insulated
Knockouts:
(3) -1/2 Inch, (2) - Loom, None
Application:
Supporting ceiling fans in various mounting conditions
Mounting Feature:
Ceiling / Bar Hanger
Certifications:
UL
Product Group:
Electrical Boxes
Product Subgroup:
Junction Boxes
Product Size:
4 inches
Product Diameter:
4 inches
Product Material:
Steel
Department:
Electrical
Product Depth:
2.125 inches

Centaur CM-FSDB-SC – Frequently Asked Questions

1) Which Centaur fan support box do I use for new construction versus an existing finished ceiling?
The Centaur 4 inch deep fan support box comes in four mounting configurations, and the one you pick depends on whether the ceiling is open. For new construction with joists exposed, use the New Work Bar Hanger version (CM-FSDB-NBH, octagon) or the Standard bar version (CM-FSDB-FB, round). For a retrofit into a finished ceiling where you are working through a cut hole, use the Old Work Bar Hanger version (CM-FSDB-OBH, round). There is also a bar hanger version for suspended ceilings. All four are 4 inches in diameter and 2-1/8 inches deep.
2) Will this Centaur box mount in a drop ceiling grid?
One of the four configurations is a bar hanger built for suspended ceilings, so yes, that version is the one to order for a drop grid. The other three (standard bar, new work bar hanger, old work bar hanger) are meant for joist or finished-ceiling work and will not hang correctly off grid tee. Specify the suspended ceiling option at the order line.
3) Do I need a separate bar hanger, or does the Centaur fan support box include one?
The bar hanger is part of the configuration you select rather than a separate purchase. The Centaur 4 inch deep fan boxes ship in standard bar, new work bar hanger, old work bar hanger, and suspended ceiling bar hanger versions, and the mounting feature is ceiling / bar hanger. Choose the version that matches your ceiling condition and the hanger comes with it.
4) Are these Centaur fan boxes round or octagon?
Both shapes are in the range, at the same 4 inch size. The standard bar version (CM-FSDB-FB) and the old work bar hanger version (CM-FSDB-OBH) are round boxes. The new work bar hanger version (CM-FSDB-NBH) and the screw clamp version (CM-FSDB-SC) are octagon. Either shape takes a standard 4 inch round or octagon fan canopy and cover, so the choice is driven by the mounting method, not the trim.
5) How many Centaur fan support boxes come in a pack?
They are sold 12 to a pack, which suits a property manager or electrical contractor stocking a unit turn or a multi-room fan rollout where you want one mounting style standardized across the building.
How fast can I get the Centaur CM-FSDB-SC 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 Centaur CM-FSDB-SC come with a warranty?
Absolutely. The Centaur CM-FSDB-SC 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 Centaur CM-FSDB-SC?
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 Centaur CM-FSDB-SC 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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