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Sheet Metal Duct Starting Collar Product #: 45-18
Model 45, 18" x 8", Hot Dip Galvanized Steel, Straight, Rectangular, Sheet Metal Duct Starting Collar Learn More
Sheet Metal Duct Collar Product #: 45-1810
Model 45, 18" x 10", Hot Dip Galvanized Steel, Straight, Starting, Sheet Metal Duct Collar Learn More