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53151 1/2 3/4 4" x 1-1/2" x 4", 12-Knockout, 21 Cu Inch, Pre-Galvanized Steel, Square Outlet Box Extension Ring$2.25 / EAAvailability: 6 EAQuickview
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Shopping Options - Knockout Size (2) 1/2 Inch Conduit Sides,(4) Conduit Cable Ends Remove This Item
- Knockout Size (3) 1/2 Inch Conduit Bottom, (2) 3/4 Inch Conduit Bottom, (2) 1/2 Inch Conduit Side, (1) 3/4 Inch Conduit Side, (4) 1/2 Inch Conduit End, (2) 3/4 Inch Conduit End Remove This Item
- Knockout Size (4) 1/2 Inch Conduit Sides, (2) 3/4 Inch Conduit Sides, (4) 1/2 Inch Conduit Ends, (2) 3/4 Inch Conduit Ends Remove This Item
- Number of Knockouts 12 Remove This Item