55171-S - Octagon Extension Ring 2-1/8" Deep 1/2 & 3/4" KOs, 4", 25 Pak

55171-S - Octagon Extension Ring 2-1/8" Deep 1/2 & 3/4" KOs, 4" - Electrical Box Extension Ring This octagon extension ring by Southwire is designed to increase wire capacity and provide additional conduit access to existing 4-inch octagon electrical boxes. It features a 2-1/8 inch depth and includes four side conduit knockouts sized for 1/2 and 3/4 inch fittings. The extension ring allows electrical distributors and switchgear suppliers to enhance wiring infrastructure without removing existing outlet box connectors or devices, making it suitable for lighting solutions and wire and cable installations. Specifications Manufacturer: Southwire Manufacturer Part Number: 55171-S Dimensions: 4.51 in (Length) x 4.51 in (Width) x 4.01 in (Height) Depth: 2-1/8 inches Conduit Knockouts: 1/2 inch and 3/4 inch Box Size: 4 inch octagon Package Quantity: 25 Product Weight: 1.1060 lbs Country of Origin: China UPC: 785592116130 Features Four side conduit knockouts for flexible wiring options Adapter slots for easy slide-on attachment to existing electrical junction boxes Prevents removal of older outlet box connectors and devices during capacity upgrades Provides added wire capacity and access for additional conduit runs Downloads & Links Cutsheet