This robust steel octagonal junction box from PROSERIES is designed for reliable electrical connections and lighting fixture support. Crafted from corrosion-resistant galvanized steel, it ensures long-term durability. Featuring integrated cable clamps for secure wire retention and a raised grounding point for reliable earth continuity, this box is ideal for code-compliant installations in residential, commercial, and industrial environments. It is suitable for junction applications using EMT, BX, or Rigid Conduit.The PROSERIES BOX 54171-K is a 4-inch octagonal junction box with a depth of 2-1/8 inches and a capacity of 21 cubic inches (345 cm³). Constructed from galvanized steel, it features concentric knockouts and a raised earth grounding terminal. The box is suitable for new work applications and supports junction applications using EMT, BX, or Rigid Conduit.