Arlington Industries Adjustabl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$33.22
Arlington Industries Adjustable Fire-Rated Ceiling Fan and Fixture Box with 2-Hour Rating - 21.0 cu. in. Round Black Plastic

Arlington Industries Adjustable Fire-Rated Ceiling Fan and Fixture Box with 2-Hour Rating - 21.0 cu. in. Round Black Plastic

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Model: FBA426

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

$33.22
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Arlington Industries Adjustable Fire-Rated Ceiling Fan and Fixture Box with 2-Hour Rating

Professional fire-rated electrical box for secure ceiling fan and fixture installations

Arlington Industries delivers professional-grade fire protection with this adjustable fire-rated ceiling fan and fixture box, featuring a 2-hour fire rating for enhanced safety. This round black plastic box provides 21.0 cubic inches of capacity with adjustable mounting for versatile ceiling installations, backed by UL listing and quality American manufacturing.

Professional Features & Benefits

  • 2-Hour Fire Rating: Provides extended fire protection to meet stringent building code requirements and enhance occupant safety.
  • 21.0 Cubic Inch Capacity: Offers ample space for wire connections and accommodates various ceiling fan and fixture wiring configurations.
  • Adjustable Design: Enables precise positioning and secure mounting for different ceiling thicknesses and installation requirements.
  • UL Listed: Meets rigorous safety standards and ensures compliance with electrical codes for professional installations.
  • Durable Plastic Construction: Provides reliable performance with lightweight yet robust material that resists corrosion and environmental factors.
  • American Manufacturing: Built in the United States with quality control and materials that meet professional standards.

Technical Specifications

  • Color: Black
  • Country Of Origin: United States
  • Height: 4.000"
  • Listing: UL
  • Material S : Plastic
  • Standard Packaging: 25pcs
  • Style: Round, adjustable fan/fixture box, 21.0 cu. in.
  • Unit Packaging: 25pcs
  • Weight: 0.618 lbs/each
  • Width: 4.800"

Professional Applications

  • Residential ceiling fan installations requiring fire-rated protection
  • Commercial building ceiling fixture mounting with enhanced safety requirements
  • Multi-unit residential properties with stringent fire code compliance
  • Professional office buildings and retail establishments
  • Educational facilities and healthcare environments
  • Light industrial applications requiring UL-listed fire-rated boxes

Why Choose Arlington Industries Quality?

Arlington Industries combines American manufacturing excellence with UL-listed safety standards to deliver reliable fire-rated electrical solutions. The durable plastic construction and 2-hour fire rating provide long-term performance and code compliance, while the adjustable design ensures professional installation flexibility for demanding applications.

Manufacturer Resources

Spec Sheet

Product Specs

Country Of Origin:
United States
Listing:
UL Listed
Department:
Electrical
Product Type:
Fan & Fixture Box
Product Category:
Fan & Fixture Boxes
Product Color:
Black
Product Height:
4.000"
Product Style:
Round, adjustable fan/fixture box, 21.0 cu. in.
Product Weight:
0.618 lbs/each
Product Width:
4.800"
Product Material:
Plastic
Product Group:
Boxes & Enclosures
Product Subgroup:
Electrical Boxes

Arlington Industries FBA426 – Frequently Asked Questions

1) Will the Arlington FBA426 fan box work in a fire-rated ceiling assembly?
Yes. The FBA426 is a fire-rated round fan and fixture box carrying a 2-hour rating, and it is UL listed. That is what lets it go into a rated ceiling assembly in multi-family, healthcare, or education work where a standard non-rated box would break the rating. It is a black plastic box, so no separate fire-rated putty pad is being described here, the rating belongs to the box itself.
2) Is 21 cubic inches enough box fill for a ceiling fan with a light kit?
The FBA426 gives you 21.0 cu. in. of volume. That is the number you run your box fill calculation against: count the conductors, the clamps, the device yoke, and the equipment grounds per code and confirm they land inside 21.0. For a straightforward fan feed with one supply and the fan whip it is workable; for a fan with a separately switched light kit pulling a three-wire feed plus a downstream run, do the math before you commit, because the added conductors are what pushes a 21 cu. in. box over.
3) What size opening does the Arlington FBA426 ceiling box need?
The box measures 4.800 inches wide and 4.000 inches high. Cut and frame to the 4.8 inch dimension, not to a nominal 4 inch round, or the box will not seat. Worth checking against the existing hole if you are swapping out an old 4 inch pancake or octagon box, since those are often cut smaller.
4) Do I have to buy a case of Arlington FBA426 boxes or can I get one?
Standard packaging on the FBA426 is 25 pieces per unit. Each box weighs 0.618 lbs, so a full 25-count carton is light enough to carry up a ladder in one trip. For a single fan replacement the case quantity is worth knowing up front, it is a stocking pack aimed at contractors doing multiple openings.
5) Can I use a plastic box for a ceiling fan instead of a metal one?
A non-metallic fan box like the FBA426 is fine for fan support where it is listed for that use, and this one is a UL listed fan and fixture box. Plastic has two practical advantages over steel overhead: it does not corrode, and at 0.618 lbs it is easier to handle across a lot of openings. Where you would still reach for a metal box is anywhere you need the box itself to carry an equipment ground path, since a plastic box has no metal to bond, so bring your ground to the fixture.
6) Will one Arlington FBA426 work for both a ceiling fan and a plain light fixture?
It covers both. The FBA426 is a combination fan and fixture box, so a contractor roughing in a run of ceiling outlets can use the same part whether the owner ends up hanging a fan or a flush-mount light. For property managers standardizing across units, that means one part number on the shelf instead of two, and every opening stays fan-ready if a tenant later wants one.
7) Is the Arlington FBA426 made in the USA?
Yes, the FBA426 fan and fixture box is manufactured in the United States. That is the answer institutional and government buyers need when a job carries a domestic sourcing requirement on the bid.
8) What is the Arlington part number for the 21 cubic inch 2-hour fire-rated round fan box?
FBA426. That is the Arlington Industries designation for the round, adjustable, 2-hour fire-rated fan and fixture box at 21.0 cu. in. Use that number when matching a spec or reordering to keep the rated assembly consistent across a building.
How fast can I get the Arlington Industries FBA426 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 Arlington Industries FBA426 come with a warranty?
Absolutely. The Arlington Industries FBA426 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 Arlington Industries FBA426?
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 Arlington Industries FBA426 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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