4″ Square extension box with concentric knockouts.Extension Ring 53171-K
$6.97
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Category: Metal Boxes
Description
- Item No.:53171-K
- Size: 4″x4″x2-1/8″
- 4″ Square extension box with concentric knockouts.Extension Ring.
- Thickness: 1.2mm &1.3mm
- Material: Galvanized steel
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