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- Sheet Metal Duct Reducer/Increaser Product #: 66-1814Model 66, 18" x 14", 26 Gauge, Hot Dip Galvanized Steel, No Crimp, Tapered, Sheet Metal Duct Reducer/Increaser Learn More
- Sheet Metal Duct Reducer/Increaser Product #: 66-1816Model 66, 18" x 16", 26 Gauge, Hot Dip Galvanized Steel, No Crimp, Tapered, Sheet Metal Duct Reducer/Increaser Learn More