This RN-2002506 18/4 Riser Fire Alarm Cable is designed for reliable fire alarm system installations. The unshielded cable comes in convenient 500-foot Express Box with distinctive red jacket for easy identification. Meeting multiple compliance standards including FPLR (Fire Power Limited Riser), CL3R (Class 3 Riser), and FT4 fire ratings, this cable ensures proper installation in accordance with building safety codes. The 18 AWG 4-conductor configuration provides the necessary capacity for standard fire alarm circuits. Ideal for vertical shaft applications between floors in commercial buildings, this riser-rated cable offers the dependability required for critical life safety systems. The Express Box packaging allows for smooth dispensing during installation, helping professionals complete projects efficiently while maintaining compliance with relevant fire safety regulations.