Panduit PWB4X4EZ 4" × 4" Electro Zinc Wire Basket Tray

The Panduit PWB4X4EZ is a 4" × 4" steel wire basket tray with electro zinc finish, engineered for structured cable routing in data centers, connected buildings, and industrial automation environments. UL-classified as an equipment grounding conductor per NEC sections 392.3(C) and 392.7(B), this basket tray provides code-compliant pathway support for power and low-voltage cabling while maintaining continuous electrical ground throughout the installation. The electro zinc coating delivers corrosion resistance in mixed indoor/outdoor transitions and mechanical rooms where moisture and temperature swings challenge uncoated steel systems.

Key Features

4" × 4" cross-section steel wire basket construction for medium-density cable loads

Electro zinc finish for corrosion resistance and extended service life in harsh environments

UL-classified for use as equipment grounding conductor per NEC 392.3(C) and 392.7(B)

Compatible with Panduit's full wire basket fitting and support ecosystem

Steel construction supports cable loads in horizontal and vertical runs

Open basket design maintains airflow and simplifies adds/moves/changes

Packaged individually, shipped 2 units per carton for job-site delivery

The steel wire construction provides mechanical strength for mixed-media cable bundles—Cat 6A, fiber trunk, and AC whips—while the open basket design maintains airflow and simplifies adds/moves/changes without disassembly. Electro zinc plating resists galvanic corrosion when installed alongside aluminum conduit or dissimilar grounding infrastructure, a common scenario in retrofit mechanical rooms where legacy and modern systems converge. The UL grounding conductor classification eliminates the need for separate bonding jumpers at every joint, reducing material cost and installation labor while maintaining continuous ground plane across the entire cable pathway. Wire basket sections carry significantly lower weight per linear foot than solid-bottom ladder rack, reducing hanger and structural loading calculations in ceiling grid installations.

In data center hot-aisle installations, the 4" × 4" profile handles trunk bundles from overhead ladder rack down to end-of-row PDUs without exceeding NEC fill ratios for heat dissipation. For connected building risers, the basket tray transitions from telecom room to IDF with Panduit vertical fittings, supporting fiber backbones and PoE homerun bundles in a single grounded pathway. Industrial automation deployments—factory floors, process control rooms, and material handling facilities—benefit from the corrosion-resistant finish in environments where cutting fluid mist, washdown cycles, or coastal humidity would degrade painted or uncoated steel within warranty periods. The silver electro zinc finish also simplifies visual inspection during commissioning, as the bright coating makes cable color coding and bundle identification easier under poor lighting conditions typical in ceiling plenums and below raised-floor installations.

The UL equipment grounding conductor classification simplifies AHJ inspections by providing literal code compliance documentation for NEC 392.3(C) and 392.7(B)—critical when your build permit depends on passing the first electrical rough-in review. This classification isn't cosmetic; it's third-party verification that the basket, fittings, and splice points maintain sub-milliohm bonding across every 10-foot section joint, ensuring fault current has a defined return path that trips breakers instead of energizing conduit or enclosures. For integrators running mixed IT/OT cable plants where a single ground fault can halt production or corrupt PLC comms, this basket tray converts cable routing from a cosmetic afterthought into a UL-backed safety system. The competitor cross-reference to CF 105/100EZ, FT4X4X10-EG, WBT4X4EG, and WBT4X4ZP allows direct drop-in replacement on projects originally spec'd with alternate manufacturers, maintaining job schedule without submittal reapproval delays.