The JBX43465 20m FC/APC to FC/APC simplex singlemode fiber patch cable represents a premium solution for telecommunications infrastructure requiring reliable, low-loss signal transmission. This professional-grade cable is engineered to meet the exacting demands of modern data centers, carrier networks, and enterprise installations. **Technical Excellence:** Built with precision-grade 9/125 singlemode fiber core and G.657.A1 glass fiber construction, this cable delivers superior optical performance. Insertion loss specifications of ≤0.35dB (0.15dB typical) and return loss ≥20dB ensure minimal signal degradation. Attenuation ratings of 0.25 dB/km at 1310nm or 0.35 dB/km at 1550nm provide excellent performance across standard telecommunications wavelengths. All specifications are tested and verified in accordance with ANSI/TIA/EIA-455-171-A standards. **Durability and Installation:** The 1.8mm outside diameter cable features riser-rated (OFNR) jacketing, making it suitable for building installations where fire rating is required. The bright yellow jacket provides instant visual identification, reducing installation errors and accelerating troubleshooting procedures. FC/APC connectors (angled physical contact) provide superior return loss performance compared to PC connectors, ideal for demanding applications. **Compliance and Standards:** Fully TAA compliant for government and institutional procurement. RoHS/ELV compliant per EU directive 2002/95/EC. Manufactured in Taiwan, US, or China facilities maintaining consistent quality standards. Harmonization code 8544.70.0000 for international shipping. **Flexibility and Value:** While this 20-meter cable suits standard rack-to-rack connections, custom lengths are available upon request. Free standard shipping on orders exceeding $99, with efficient fulfillment from Danville, CA; Fort Worth, TX; or Beaufort, SC locations. Backed by a comprehensive 90-day limited warranty. **Applications:** Ideal for fiber optic network installations, telecommunications equipment connections, testing and measurement setups, and high-reliability signal transmission environments. Suitable for both single-mode long-distance communications and precision instrumentation applications. This cable represents the professional choice for organizations requiring certified, tested fiber connectivity backed by proven manufacturing standards.