United U-LI's Underfloor Service Outlet Box is a specialized cable management enclosure engineered to segregate and distribute power, voice (telephone), and data (computer) connections directly from subfloor trunking layouts to workstations. Fabricated primarily from rigid, non-corrodible hot-dipped galvanized steel sheets (or zinc-alloy/aluminum depending on the design variant), these boxes are commonly used in commercial offices, schools, and institutions with raised access floor or concrete screed configurations.
Key Specifications & Construction
The U-LI underfloor service box is modularly divided into three core components: the box base frame, the flyover bridge (which prevents data cables from intersecting with electrical power), and the trap/frame cover assembly.
- Sizes Available: The standard sizing footprint includes 250mm x 250mm and 300mm x 300mm variants.
- Compartment Layout: Typically available in 2-compartment or 3-compartment configurations to allow discrete structural physical barriers between electrical lines and communication networks.
- Overall Depth Adjustments: Standard baseline module depths vary between 56mm (suited for 25mm deep trunking) and 75mm (suited for 32mm/38mm deep trunking).
- Leveling System: They use specialized leveling screws (such as the
UL-LS38,UL-LS60, orUL-LS95) to adapt height adjustment ranges anywhere from 56mm up to 130mm to meet flush floor alignment criteria. - Floor Finish Recess: Designed with a structural recessed frame rim (typically 6mm to 9mm), allowing the matching surrounding carpet, parquet, or vinyl floor tiles to be inserted directly into the lid top for a clean, integrated aesthetic look.
Product Selection Reference
When ordering from regional stockists or electrical distributors like GEASB, the parts numbers indicate specific dimensional profiles:
| Product Code | Dimensions (Footprint x Depth) | Compartment Count | Cover Details |
|---|---|---|---|
| UL-UFSBM 250/2/1 | 250 x 250 x 75–95 mm | 2 Compartments | 1 Trap Lid |
| UL-UFSBM 250/3/1 | 250 x 250 x 75–95 mm | 3 Compartments | 1 Trap Lid |
| UL-UFSBM 300/2/1 | 300 x 300 x 75–95 mm | 2 Compartments | 1 Trap Lid |
| UL-UFSBL 250/3/1 | 250 x 250 mm Footprint | 3 Compartments | 1 Trap Lid |
(Note: Sockets, faceplates, and modular switch mechanisms are typically ordered separately to fit the custom configuration required for your project).
Are you currently replacing an existing unit, doing a new installation, or sourcing matching faceplates and internal sockets? Let GEASB know the specific depth or part requirements you need so we can locate more structural detail.
