The 8441-BLK-1000 part of Belden is a 1000ft length spool of riser-rated shielded twisted pair (STP) data cable. This cable features two individually shielded 24AWG pairs, making it ideal for data, voice, and security applications that require minimal noise interference. The cable is UL listed and is suitable for use in vertical shafts of fire safety and communication systems, plenum spaces and ducts, and connecting between floors of multi-story buildings. It is molded, black in color for easy identification, flame retardant and is designed for installations requiring resistance to higher temperatures and oil. It is also halogen-free and eco-friendly, making it suitable for environmentally conscious areas.