Arlington FLBR5420 Recessed Floor/Counter Box
Arlington FLBR5420 Recessed Floor/Counter Box
Description
The Arlington FLBR5420 InBox represents an innovative approach to integrating flush-mount power and data connections into countertops and floor surfaces. This premium recessed floor box requires a precise 5-inch diameter circular cutout, designed to accommodate Arlington's ultra-thin stamped steel flange system that sits virtually flush with the finished surface. The FLBR5420 features a 20-amp tamper-resistant decorator-style duplex receptacle combined with two low-voltage keystone openings for data, USB, HDMI, or other connectivity options. Fabricators installing this system in granite, quartz, marble, and solid surface countertops appreciate its compact 6.625-inch round cover, ultra-thin 0.067-inch flange thickness, and 24.5 cubic inch capacity that accommodates substantial wiring while requiring minimal underside clearance. The round design distributes stress evenly in stone materials, reducing the risk of cracking compared to rectangular cutouts. This DXF template ensures your CNC router creates perfectly circular 5-inch diameter openings that allow the FLBR5420's recessed box to install flush with your countertop surface, providing sophisticated power and data access in kitchen islands, conference tables, and executive work surfaces.
Dimensions
Specifications
- Manufacturer
- Arlington
- Model Number
- FLBR5420
- Downloads
- 0
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The Arlington FLBR5420 InBox represents an innovative approach to integrating flush-mount power and data connections into countertops and floor surfaces. This premium recessed floor box requires a precise 5-inch diameter circular cutout, designed to accommodate Arlington's ultra-thin stamped steel flange system that sits virtually flush with the finished surface. The FLBR5420 features a 20-amp tamper-resistant decorator-style duplex receptacle combined with two low-voltage keystone openings for data, USB, HDMI, or other connectivity options. Fabricators installing this system in granite, quartz, marble, and solid surface countertops appreciate its compact 6.625-inch round cover, ultra-thin 0.067-inch flange thickness, and 24.5 cubic inch capacity that accommodates substantial wiring while requiring minimal underside clearance. The round design distributes stress evenly in stone materials, reducing the risk of cracking compared to rectangular cutouts. This DXF template ensures your CNC router creates perfectly circular 5-inch diameter openings that allow the FLBR5420's recessed box to install flush with your countertop surface, providing sophisticated power and data access in kitchen islands, conference tables, and executive work surfaces.
Installation Overview
Installing the Arlington FLBR5420 recessed round floor box requires careful planning and precise circular cutting to achieve the flush, seamless appearance this system is designed to provide. Begin by confirming the exact 5-inch diameter cutout requirement specified in Arlington's installation documentation, as this tight tolerance is critical for proper box fit and flange seating. Position the cutout location to provide adequate structural support, maintaining at least 5-6 inches from countertop edges in granite and quartz materials to prevent stress fractures around the circular opening. The FLBR5420 requires 6.55 inches of depth clearance beneath the countertop surface to accommodate the box body, though its relatively compact 24.5 cubic inch capacity makes it more adaptable to tight underside spaces than larger floor box systems. Plan electrical rough-in carefully, as the unit requires connection to a dedicated 20-amp circuit and includes an NM cable connector for secure wiring attachment. For granite and quartz installations, use precision diamond core bits or diamond-coated router bits specifically designed for circular cutouts in hard stone materials. Maintain continuous water cooling during cutting to prevent thermal stress and micro-cracking in the stone. The circular cutout must penetrate the full thickness of the countertop material with vertical walls to ensure the box body fits properly and the ultra-thin steel flange seats correctly against the top surface. Test-fit the FLBR5420 box and cover assembly before final installation, verifying that the cover sits flush or slightly recessed as intended. The system includes two installed low-voltage keystone holder inserts and two blank keystone inserts, allowing customization of data connectivity options during or after installation. Install the included gaskets carefully to ensure proper sealing against moisture and debris. The flip-style cover provides in-use protection while maintaining a clean, minimal profile when closed. For kitchen island installations, coordinate with electricians regarding GFCI protection requirements and proper grounding of the metal box components.
CNC Cutting Notes
Programming CNC routers for the Arlington FLBR5420's 5-inch diameter circular cutout demands precision and appropriate tooling to achieve the exact dimensions critical for proper box installation and function. The 5-inch diameter specification requires tight tolerance control, as variations of even 0.0625 inches can result in boxes that don't seat properly or flanges that don't sit flush with the countertop surface. Use helical interpolation or ramping circular entry rather than straight plunge cutting to minimize tool stress and reduce the risk of material fracture at the entry point. For granite materials, recommended cutting parameters include feed rates of 25-35 inches per minute with spindle speeds around 14,000-16,000 RPM using diamond-coated router bits with minimum 1/2-inch diameter shanks for maximum rigidity. Engineered quartz may tolerate slightly higher spindle speeds up to 18,000 RPM while maintaining similar feed rates. Program multiple shallow depth passes rather than attempting full-depth cuts, with maximum depth per pass around 0.15-0.2 inches in hard stone materials to extend tool life and minimize vibration. Implement climb cutting direction to reduce top-surface chipping and produce cleaner edge quality. For materials thicker than 3cm, consider programming a roughing pass at 4.9 inches diameter followed by a finishing pass at exactly 5.0 inches diameter to achieve optimal wall surface quality and dimensional accuracy. This two-pass approach also extends tool life by reducing the cutting load on the final precision pass. Ensure your CAM software accounts for accurate tool diameter compensation, as even small errors in tool diameter entry can produce cutouts that are oversized or undersized beyond acceptable tolerances. Maintain robust coolant flow throughout the cutting cycle, with water delivery aimed at both the cutting edge and the surrounding material to manage heat effectively. For production environments, implement regular dimensional verification using precision measuring tools, as the tight tolerances required for proper FLBR5420 installation demand consistent cutting accuracy across all units. Monitor tool wear carefully and establish replacement schedules based on material type and production volume, as worn tools produce dimensional drift that compromises installation quality.
Material Compatibility
The Arlington FLBR5420's circular design and moderate size provide excellent compatibility across most premium countertop materials commonly used in residential and commercial fabrication. Natural granite in both 2cm and 3cm thicknesses works exceptionally well with this template, as the circular cutout distributes stress evenly throughout the material structure, reducing the risk of cracking compared to rectangular openings with stress-concentrating corners. The 5-inch diameter provides sufficient material retention around the perimeter while accommodating the box's functional requirements. Engineered quartz surfaces including Silestone, Caesarstone, Cambria, and Viatera represent ideal substrates for the FLBR5420, offering consistent density and material properties that ensure reliable cutting results and excellent long-term dimensional stability. The non-porous nature of engineered quartz also provides superior moisture resistance around the box installation. Solid surface materials like Corian, Staron, and Hi-Macs in 3/4-inch thickness work adequately with this template, though the 6.55-inch box depth may require thinning of the box body or use of thinner countertop materials. The circular cutout is straightforward to execute in solid surface using carbide router bits, and the material's homogeneous composition ensures consistent cutting without concerns about hidden voids or weak planes. Marble and other softer natural stones accommodate this template well, as the circular geometry avoids the corner stress points that often propagate cracks in softer materials. Maintain proper edge distances and verify that natural veining doesn't create weak planes that intersect the cutout perimeter. Ultra-compact surfaces such as Dekton and Neolith provide exceptional strength and stability for FLBR5420 installations, requiring specialized diamond tooling but delivering extraordinarily clean circular cuts with excellent dimensional accuracy and long-term stability. Porcelain slabs in 12mm or thicker configurations offer good compatibility, providing adequate structural strength when proper edge distances are maintained and appropriate support structures are present beneath the cutout location. Laminate countertops present challenges for the FLBR5420 due to limited structural strength in particleboard substrates and moisture vulnerability around cutout penetrations; if laminate installation is required, ensure the cutout is positioned over solid cabinet structures and consider reinforcement with marine-grade plywood backing. Wood countertops including butcher block can accommodate the FLBR5420's circular cutout, but require exceptional moisture sealing around the perimeter to prevent seasonal expansion and contraction from affecting box fit and seal integrity.