B-Line Eaton series Flex tray wire basket tray, Controlled interior reended application, Black powder coat finish, Steel, 15.8" actual area inside tra

The FT4X4X10 BLE is a 4 inch wide by 4 inch deep wire basket tray section, and the usable area inside the tray is 15.8 square inches. Overall height is 4.38 inches, which is what you need for clearance above and below when you hang it in a plenum or under a raised floor. Steel construction with a black powder coat.

No. The FT4X4X10 BLE is specified for controlled interior use. Black powder coated steel is meant for conditioned spaces like data centers, telecom rooms, and above-ceiling office runs. For exterior, washdown, or corrosive environments you want a hot dip galvanized or stainless basket tray instead.

What ships is the tray section itself, 4 by 4 inches by 118.312 inches of black steel basket. Splice connectors, trapeze or wall support hardware, threaded rod, grounding, and any bonding jumpers are separate line items. On a basket tray system you also form your own bends, tees, and drops by cutting the wire mesh on site rather than buying molded fittings, so plan for bolt cutters and edge protection in the labor.

It is purely a visibility decision. Black powder coat is what people specify for exposed ceilings in data centers, studios, retail, and open-plenum offices where the tray is seen and needs to disappear against a dark deck. Mechanically the FT4X4X10 BLE is the same 4 by 4 inch steel Flextray section either way, with 15.8 square inches of interior fill area. If the run is above a hard lid or in a back-of-house space, finish does not matter and you can spec whatever matches the rest of the job.

A 4 by 4 gives 15.8 square inches of fill area, which suits branch runs, drops off a main, and small telecom or security cable bundles. It is a common size for feeding individual racks or running down a corridor to a handful of workstation outlets. If you are carrying a backbone bundle or expect growth, step up to a wider Flextray section and keep the 4 inch depth so your supports and splice hardware stay consistent.

A full section weighs 11.25 lb empty, at 118.312 inches long. That is the tray only, so add your cable fill weight when you size trapeze hangers, threaded rod, or wall brackets and when you confirm the structure above can take the run.

Wire basket like the Flextray is the usual pick for low voltage and data because it is open on all sides, so you can drop a cable out anywhere along the run without a knockout, airflow passes through it, and you field cut the geometry instead of ordering fittings. Ladder and solid bottom tray are the better call for heavy power feeders and long unsupported spans where you need the load capacity and, with solid bottom, some physical shielding for the conductors. This 4 by 4 inch section with 15.8 square inches of fill is sized for the data and comms side of that split.

The FT4X4X10 BLE carries the CE mark. That is the certification held on record for this section; if your submittal calls for anything beyond it, confirm against the manufacturer's published data for the Flextray series before you close out the spec.