4-11/16 SQBX EXT STL 42CU 1-KO

4-11/16 SQBX EXT STL 42CU 1-KO Square Box Extension Ring This 4-11/16 inch square box extension ring from Steel City is designed for use with conduit in electrical installations. It provides an additional 2-1/8 inches of depth, increasing the box volume by 42 cubic inches. Constructed from pre-galvanized steel with welded construction, it ensures durability and corrosion resistance. The extension ring features 1-inch knockouts to accommodate conduit connections, making it suitable for electrical distributors, lighting solutions, wire and cable management, and switchgear supplier applications. Specifications Dimensions: 4-11/16 inches Length x 4-11/16 inches Width x 2-1/8 inches Depth Volume: 42 cubic inches Material: Pre-galvanized steel Construction: Welded Number of Knockouts: 8 (1 inch size) Color: Silver Application: For use with conduit Standards: UL E2969 Product Weight: 90 lbs Country of Origin: United States (US) Features Pre-galvanized steel for corrosion resistance Welded construction for enhanced strength 1-inch knockouts for flexible conduit connections Increases electrical box volume for additional wiring space Compatible with conduit systems in commercial and industrial electrical installations Downloads & Links Spec Sheet Spec Sheet