Square to Round Adapter With 1 in FlangeSquare to Round Adapter With 1 in Flange, 16 x 16 to 16 inDescriptionECCO Manufacturing™ Square to Round Adapter With 1 in Flange, 16 x 16 to 16 in Fitting, Square to Round Shape, Galvanized, 16 in Diameter, 16-1/4 in Length, 16-1/4 in Width, 26 ga Gauge
ECCO Manufacturing, Square to Round Adapter, 563103, 16 x 16 to 16in