Panduit FOKPX24 24-Fiber OM3 Plenum Indoor/Outdoor Tight-Buffered Cable

The Panduit FOKPX24 delivers 24 fibers of OM3 50/125µm multimode performance in a plenum-rated, indoor/outdoor tight-buffered construction designed for transitional aerial-to-building runs, enterprise backbone links, and datacenter applications where a single cable must traverse both environmental zones. Each fiber carries a 900µm buffer for direct termination, eliminating the breakout-kit hassle of loose-tube designs, while gel-free water blocking protects against moisture ingress in duct and aerial installations. Built to NEC OFNP standards, this cable meets plenum air-handling space requirements with low smoke and flame spread, making it code-compliant for riser shafts, return-air plenums, and above-ceiling pathways across commercial security, datacenter, and campus network deployments.

Key Features

• OM3 Multimode Performance: 50/125µm laser-optimized fiber supports 10GBASE-SR up to 300 meters and 40/100GBASE-SR4 at reduced distances, future-proofing enterprise and datacenter links.
• Tight-Buffered 900µm Construction: Individual buffer on each fiber enables direct connector termination without breakout kits or fan-out assemblies, reducing labor and splice-enclosure footprint in telecom rooms and patch panel installations.
• Indoor/Outdoor Dual Rating: Designed for transitional runs—aerial entrance facilities, building-to-building duct crossings, and perimeter conduit-to-riser transitions—where environmental exposure shifts mid-route.
• Plenum (OFNP) Compliant: Meets NEC Article 770.179(A) requirements for air-handling spaces; low-smoke, low-flame-spread jacket approved for installation in return-air plenums, suspended ceilings, and vertical risers without additional conduit.
• Gel-Free Water Blocking: Dry water-blocking technology prevents moisture migration along the cable length during outdoor/aerial exposure, protecting fiber integrity without the mess of gel-filled loose-tube cables.
• 24-Fiber Count: Right-sized for enterprise access-layer uplinks, security-operations-center backbone runs, and small-to-midsize datacenter links; eliminates over-provisioning waste of 48F or 72F trunk cables on lower-density deployments.
• Black Outer Jacket: UV-resistant black jacket provides visual coding for outdoor/plenum hybrid cable and resists sunlight degradation during aerial or conduit-exposed segments.
• Panduit Opti-Core® Quality: Factory-tested geometry and attenuation consistency ensure reliable performance with Panduit cassettes, patch panels, and trunk assemblies across the Opti-Core ecosystem.

Tight-buffered indoor/outdoor cable solves a specific deployment challenge: transitional runs where a single cable must traverse both outdoor aerial/duct environments and indoor plenum spaces without mid-route splicing or enclosure transitions. The FOKPX24's 900µm buffered fibers let installers pull the cable from a building entrance facility through a riser shaft directly to a telecom room, then terminate onto LC or SC connectors at a patch panel without breakout hardware. This contrasts with loose-tube outdoor cables, which require a splice enclosure at the building entry point to transition to indoor-rated distribution cable—adding material cost, a failure point, and physical space consumption in entrance facilities. The OM3 50/125µm core supports 10GBASE-SR Ethernet at the full 300-meter spec (IEEE 802.3ae), making this cable appropriate for enterprise campus backbone links, security operations center connections between buildings, and datacenter access-layer uplinks where 10G throughput is standard and 1G is legacy. For 40GBASE-SR4 and 100GBASE-SR4 applications, OM3 delivers 100 meters and 70 meters respectively—sufficient for intra-building datacenter links but not long-haul campus backbone; those deployments step up to OM4 or singlemode. The 24-fiber count fits access-layer and small-to-midsize backbone architectures: two 12-fiber trunk groups for redundant uplinks, or twelve duplex links with room for future expansion. Larger enterprise cores and datacenter spines typically deploy 48F, 72F, or 144F trunk cables; this cable targets the next tier down where over-provisioning drives unnecessary cost.

Plenum rating (OFNP) is a hard code requirement for any cable installed in air-handling spaces—return-air plenums above suspended ceilings, vertical riser shafts, and HVAC-integrated pathways—per NEC Article 770. The FOKPX24's low-smoke, flame-retardant jacket passes UL 910 (Steiner Tunnel Test), limiting fire propagation and toxic fume release during a fire event, which is why electrical inspectors and fire marshals flag non-plenum cable in these spaces. Indoor/outdoor-rated jacket chemistry withstands temperature cycling, UV exposure during aerial spans, and moisture infiltration in buried conduit or direct-burial applications, though this specific cable is not rated for direct burial without conduit protection. The gel-free water blocking system uses super-absorbent polymers or water-swellable tapes that activate on moisture contact, preventing water from wicking along the cable length during outdoor exposure. This is critical for aerial entrance drops and duct runs crossing parking lots or between buildings, where seasonal moisture, condensation, or groundwater seepage can migrate into cable pathways. Traditional gel-filled loose-tube cables achieve the same water blocking but leave installers with messy cleanup during termination and require heated enclosures in cold climates to prevent gel stiffening; dry water blocking eliminates both issues. The 900µm tight buffer—nearly 1mm diameter per fiber—is thick enough for direct handling and connector termination, whereas 250µm bare fiber (common in loose-tube cable) requires breakout kits and protective furcation tubing before reaching a connector. For installers, this means the FOKPX24 terminates like indoor distribution cable: strip the jacket, identify fibers by color code, cleave and polish (or use a fusion splicer), and insert into LC/SC/ST connectors without intermediate hardware. This speed advantage compounds on large installations—100-fiber job sites save hours of labor by eliminating breakout assembly steps.

Panduit's Opti-Core product line targets integrators who need consistent geometry and verified performance across cable, connector, and panel components. The FOKPX24 ships with insertion-loss and return-loss test data traceable to TIA-568.3-D standards, ensuring compatibility with Panduit cassette modules, FAP (Fiber Adapter Panel) systems, and pre-terminated trunk assemblies without field rework. This cable is the logical choice for projects specifying Panduit end-to-end infrastructure, brownfield expansions of existing Opti-Core installations, or datacenter/campus builds where the specification calls out OM3 tight-buffered plenum cable for aerial entrance feeds and riser distribution. It's sold by the foot or in reels, supporting both small retrofit pulls (100–500 feet for a building-to-building link) and large new-construction deployments (1,000+ foot reels for campus backbone routes). For projects requiring higher fiber counts, Panduit offers the same construction in 12F, 48F, and 72F variants; for OM4 (extended 40G/100G reach), the parallel FOKPX24-OM4 SKU delivers 550-meter 10G range. Integrators working on mixed indoor/outdoor security installations—perimeter cameras backhauled via aerial fiber to a central NVR rack, for example—benefit from the dual-rating's ability to traverse pole-mounted enclosures, conduit runs, and plenum ceiling spaces with a single continuous cable, reducing splice points and simplifying the bill of materials. This is the cable you spec when the architectural plan shows "fiber from telecom room A to building-entry handhole, then aerial to pole 4, then underground conduit to building B riser"—one part number, one pull, full code compliance at every segment.