Extron 2LC SM P/40 (part number 26-670-40) — a 40 metre (131 ft) duplex LC singlemode fiber assembly from Extron's plenum-rated 2LC SM P range. Extron has retired this length; Ampronix lists it for sites that need to match what is already installed.

At 40 metres the assembly is a backbone element rather than a patch cord, and the numbers that matter are loss and code compliance. Extron specifies insertion loss below 0.3 dB per 300 m at 1550 nm, so a 40 m span consumes only a small fraction of a typical link budget. The PVC jacket carries an ETL and c-ETL OFNP FT6 listing for plenum airspace, and aramid yarn inside the jacket absorbs the pulling tension a run this long attracts.

Key Capabilities

• 40 m (131 ft) of factory-terminated duplex singlemode fiber, ready to pull.
• Insertion loss under 0.3 dB per 300 m at 1550 nm keeps the link budget generous.
• Aramid yarn strength members handle the tension of a long pull.
• OFNP FT6 plenum listing recognised by ETL and c-ETL.
• LC connectors, UPC polished, sized for standard high-density fiber panels.
• Retired Extron part — useful for matching an existing 2LC SM P installation.

Where It Is Used

Forty-metre singlemode links serve multi-storey risers, large hospital and laboratory campuses, stadium and arena AV distribution, transport hubs and process control facilities — routes long enough that copper is out of the question and short enough not to warrant an outside-plant build.

Specifications at a Glance

• Cable length: 40 m (131 ft)
• Fiber: 2 glass singlemode fibers, 8.3 µm
• Attenuation: under 0.5 dB per km at 1310 nm and 1550 nm
• Post-installation fiber bend radius: 0.3 in (7.5 mm)
• Operating temperature: 0 to +70 °C

Also referenced as Extron 2LCSMP/40, 2LC-SM-P-40, part number 2667040.