Thomas & Betts SP-643-1 Flush Service Floor Box

Description:

The Thomas & Betts SP-643-1 Flush Service Floor Box is used to provide a durable in-floor wiring enclosure for power, communication, and data connections in concrete floor installations. Commonly installed in commercial offices, educational facilities, conference rooms, retail spaces, and industrial buildings where flush-mounted floor access is required. Electrical contractors, maintenance personnel, and system integrators use this floor box for new installations, renovations, and replacement of existing in-floor electrical service boxes.

Applications:

The Thomas & Betts SP-643-1 is part of the Steel City® 640 Series and features a heavy-duty cast iron watertight body with painted silver enamel and brass trim for superior durability and corrosion resistance. Designed as a fully adjustable three-gang floor box, it provides 111 cubic inches of wiring capacity and 1-inch conduit hubs for power, communications, and data services. It is ideal for commercial workstations, conference rooms, schools, retail facilities, airports, and industrial concrete floor applications requiring reliable flush floor access.

Technical Specifications:

• Brand: Thomas & Betts (ABB) – Steel City®
• Part Number: SP-643-1
• Product Type: Three-Gang Flush Service Floor Box
• Series: 640 Series
• Number of Gangs: 3
• Material: Cast Iron Body with Brass Trim
• Finish: Painted Silver Enamel with Brass Trim
• Cubic Capacity: 111 cu. in.
• Conduit Hub Size: 1 in. Tapped Hubs
• Mounting Style: Flush Floor Mount
• Box Type: Fully Adjustable Watertight Floor Box
• Application: Power, Communications, and Data Distribution
• Features: Interior and exterior leveling screws, removable partitions, expendable concrete pour cap, watertight cast iron body
• Suitable Floor Types: Concrete Floors, Carpet, and Tile Installations
• Dimensions: 4-1/2 in. Length × 3 in. Width
• Standards: UL Listed (UL File E2969), CSA Certified, RoHS Compliant

Common Replacements:

• Thomas & Betts 643
• Thomas & Betts SP-643-1-AL
• Thomas & Betts SP-643-1-1