UNITEK C18121BL Cat. 6a S/FTP LSZH Bulk Network Cable, 305m, 10GBase-T, 500MHz, Grey

10 Gigabit Ethernet over 305 metres of pure copper — this UNITEK C18121BL Cat. 6a S/FTP cable is built for high-density, high-speed structured cabling where performance and safety are non-negotiable. The screened/foiled twisted pair construction and LSZH jacket make it the go-to choice for data centres, offices, and public buildings.

Overview

The UNITEK C18121BL is a bulk Cat. 6a network cable supplied on a convenient reel, ready for professional installation. With S/FTP shielding — an overall braided screen plus individual foil per pair — it provides superior immunity to electromagnetic interference (EMI) and alien crosstalk, ensuring stable 10GBASE-T transmission up to 500 MHz. The low-smoke zero-halogen (LSZH) jacket emits minimal smoke and no toxic halogens in case of fire, meeting strict safety standards for enclosed spaces.

What stands out

• 10 Gigabit Ethernet support with 500 MHz bandwidth for demanding applications.
• S/FTP shielding: braided screen plus per-pair foil for maximum noise rejection.
• LSZH jacket: low smoke, zero halogen, flame retardant — safer for people and equipment.
• Pure copper conductors (23 AWG) ensure excellent conductivity and signal integrity.
• 305 m reel: ideal for large installations, reducing waste and splices.
• Compliant with TIA/EIA-568-C.2, ISO/IEC 11801, and RoHS; CPR classification Eca.

Technical details

• Cable type: Bulk network cable, Cat. 6a
• Shielding: S/FTP (Screened/Foiled Twisted Pair)
• Jacket material: LSZH (Low Smoke Zero Halogen)
• Length: 305 m
• Conductor: Pure copper, 23 AWG, 4 twisted pairs
• Outer diameter: approx. 7.5 mm
• Jacket colour: Grey
• Flame retardancy: IEC 60332-1, IEC 61034-2, IEC 60754-2
• Standards: TIA/EIA-568-C.2, ISO/IEC 11801, RoHS
• CPR classification: Eca

Our verdict

For installers who need certified, high-performance cabling in bulk, the UNITEK C18121BL delivers 10Gbps throughput with exceptional shielding and safety. The LSZH jacket and pure copper conductors make it a reliable backbone for any modern network.