Panduit DAP4BC-I3-5 4-Inch Data Access Port

The Panduit DAP4BC-I3-5 is a 4-inch data access port engineered for clean cable transitions through control panels, enclosures, and furniture in IT and datacenter environments. Installers use this when running copper or fiber bundles through tight quarters where knockout blanks leave rough edges or oversized openings that fail NEC 110.12 workmanship requirements. The port provides a finished grommet interface with built-in strain relief, eliminating the tape-and-zip-tie workarounds that get flagged during inspections or audits.

Key Features

4-inch diameter opening accommodates multi-cable bundles (up to 48-fiber trunk or Cat6A 4-pair bundles)

UL50/UL50E rated enclosure with IP-grade sealing — meets outdoor/washdown requirements

UL508A industrial control panel listing — compliant for factory automation and process control installs

CSA C22.2 NO. 14-13 and NO. 94.1/94.2 dual certification for cross-border datacenter projects

Snap-in or bracket-mount options for steel, aluminum, or composite panel materials

Integrated brush or slotted insert configurations — field-selectable cable retention

The DAP4BC-I3-5 ships with a two-piece hinged design: a mounting flange that secures to the panel cutout (typically a 4.5-inch knockout or field-drilled hole) and a snap-on cover plate with either a brush-style cable pass-through or slotted rubber grommet insert. Installers choose the brush variant for high-density fiber or copper bundles that need frequent adds/moves/changes — the bristles part around cables without requiring re-termination. The slotted grommet insert works better for fixed installations with pre-terminated assemblies, providing a tighter environmental seal once cables are routed. Both configurations meet UL50 NEMA 1/12 ingress protection when properly seated, critical for panels housing PoE injectors, fiber enclosures, or UPS battery compartments where dust or moisture ingress triggers nuisance faults.

UL508A certification makes this port compliant for industrial control panels in manufacturing, building automation, and access control head-end racks. Many AHJs (authorities having jurisdiction) require UL508A-listed components when datacenter infrastructure feeds process control networks or fire alarm systems — generic grommets from electrical supply houses don't carry that listing and fail plan review. The CSA dual certification extends compliance to Canadian NEC equivalents, required for healthcare datacenter builds in Ontario or BC that must meet provincial electrical codes. Panduit's construction uses flame-rated thermoplastic (UL94 V-0) rather than PVC, so it doesn't contribute to plenum fire-load calculations when installed in air-handling spaces above drop ceilings.

The DAP4BC-I3-5 eliminates three common field failures: sharp knockout edges that nick fiber jackets during pulls (causing long-term OTDR reflectance), oversized holes that let HVAC air bypass through rack gaps (breaking hot-aisle containment SLAs), and missing cable strain relief that lets patch cord weight pull on SFP+ transceivers until the retention clip fatigues. Single-unit packaging supports controlled inventory for project-based purchasing — large datacenter fit-outs typically spec 1 port per 42U rack (2 for back-to-back rows), so a 50-rack build requires 50-100 units depending on hot-aisle/cold-aisle design.