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BOX EXTNSN RING STL 4" *Brand Name: Southwire *Work Style: Old Work *Shape: Square *Material: Galvanized Steel *ProductType: Box Extension Ring *Color: Silver *Width: 4 in. *Height: 4 in. *Depth: 1.5 in. *UL Listed: Yes *Number of Knockouts: 17 *Number in Package: 1 pk *Weight: 0.56 lb. *Discovery ACC, SUP