Flush-to-Floor Round Cut-In Floor Box Kit - Nickel Cover with Threaded Plugs
Meta description: Flush-to-floor round cut-in floor box kit for existing floors. Features a nickel-plated cover with threaded plugs. Includes tamper-resistant duplex receptacle, gasketed components, and Arlington NM94 and NM95 connectors. cULus listed.
TL;DR - Who This Is For
Electricians and contractors retrofitting floor power into existing finished floors who need a flush, durable, and low-profile round floor box with a clean nickel finish.
Institutional Fit
- Office and conference room retrofits
- Residential finished floors requiring floor outlets
- Retail and hospitality interiors
- Projects where flip lids are not desired and threaded plugs provide a sealed appearance
Technical Specifications
| Part Number |
FLB3520NL |
| Product Type |
Flush-to-floor round cut-in floor box kit |
| Trade Size |
1-gang |
| Installation Type |
Existing floor (cut-in) |
| Cover Style |
Nickel-plated cover with threaded plugs |
| Material |
Nickel-plated metal cover |
| Color / Finish |
Nickel |
| Receptacle |
15A tamper-resistant duplex receptacle included |
| Weight |
0.870 lbs each |
| Dimensions |
3.995 in x 3.995 in |
| UPC-A |
018997007353 |
| Unit Packaging |
1 pc |
Regulatory Compliance
- cULus listed
Install in accordance with local electrical code requirements for floor box installations in existing floors.
Durability and Lifecycle
The nickel-plated cover provides corrosion resistance and a clean, modern appearance for visible floor installations. Threaded plugs maintain a sealed, flush surface when devices are not in use, helping reduce debris ingress and trip hazards.
Procurement Notes
- Designed specifically for retrofit and cut-in installations
- Threaded plugs provide a sealed finish without flip lids
- Includes connectors and receptacle to reduce jobsite sourcing
- Nickel finish pairs well with modern interior flooring
What’s Included
- (1) Nickel-plated cover with threaded plugs
- (2) Threaded plugs
- (1) Floor box
- (1) Gasket support plate
- (1) Gasket
- (1) 15A tamper-resistant duplex receptacle
- (1) Arlington NM95 cable connector
- (1) Arlington NM94 cable connector
- (3) #8 x 1/2 in screws
- (1) #6 x 1/2 in screw
- (3) #6 x 1-1/4 in screws
FAQ
Is this floor box designed for new concrete pours?
No. This model is intended for cut-in installation in existing floors.
Does the cover sit flush with the finished floor?
Yes. The design is flush to the floor after installation.
How is the opening sealed when not in use?
Threaded plugs are used instead of flip lids to maintain a clean, sealed surface.
Is a receptacle included?
Yes. A 15A tamper-resistant duplex receptacle is included.
Where can I find full specifications and drawings?
Click here for spec sheet