53151-1/2 Square Box Extension Ring - Electrical Box Extension The Steel City® 53151-1/2 Square Box Extension Ring is a pre-galvanized steel extension ring designed for use in electrical construction. It provides additional cubic capacity to 4-inch square electrical boxes, making it suitable for contractors and electrical distributors requiring reliable and durable wire management solutions. This extension ring is part of Steel City's industry-leading line of metallic switch and outlet boxes and accessories, known for high-quality manufacturing and innovative design. The product is ideal for applications requiring increased box volume and secure mounting in lighting solutions, wire and cable installations, and switchgear setups. Specifications Material: Steel Color: Silver Dimensions: 4 Inch Width x 4 Inch Height x 1-1/2 Inch Depth Cubic Capacity: 21 cubic inches Number of Knockouts: 12 Number of Outlets: 1 Product Weight: 22.0 lbs Manufacturer: Steel City Manufacturer Part Number: 53151 1/2 Standards: UL E2969 UPC: 785991167757 Features Pre-galvanized steel construction for corrosion resistance and durability Designed to increase cubic capacity of standard 4-inch square electrical boxes 12 knockouts provide versatile conduit entry options Compatible with a variety of electrical boxes and switchgear assemblies Silver finish for professional appearance and corrosion protection Part of Steel City’s trusted product line known for innovative design and contractor-focused improvements Downloads & Links Catalog Specification/Technical Catalog
