4" Square Steel Electrical Extension Ring – 30 cu in Galvanized Box Extension with 10 Knockouts
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This 4" square galvanized steel extension ring is designed to increase box depth for safer wire capacity and easier device installation. Built for durability and versatility, it includes concentric knockouts for flexible conduit entry and is ideal for extending existing electrical boxes in residential and commercial applications.
Key Features:
• 4" square steel extension box / extension ring
• Galvanized steel construction for strength and corrosion resistance
• Dimensions: 4" x 4" x 2 1/8"
• 30 cu. in. capacity
• 10 concentric knockouts for flexible wiring entry
• Ideal for extending existing electrical boxes
• Suitable for residential and commercial installations
Looking for a bulk order?
4" Square Steel Electrical Extension Ring – 30 cu in Galvanized Box Extension with 10 Knockouts
Sale price$3.65 CAD
Regular price$7.11 CAD (/)