10 In. X 3-1/4 In. Rectangular Stack Duct Cap

Stack Duct Starting Collar Rectangular 3-1/4" x 10" 911433 - Bent

10 In. X 3-1/4 In. Rectangular Stack Duct Cap

3-1/4" x 10", 6", 6" Diameter Galvanized Transition Rectangular To Round Duct

3-1/4 In. X 10 In. Rectangular Stack Duct Starting Collar

6in Round to 3-1/4x10 square HVAC Duct Transition Adapter Galvanized Silver

3.25 In. X 10 In. X 3 Ft. Half Section Rectangular Stack Duct

10 In. X 6 In. Rectangular Stack Head