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Imperial
90 deg. adjustable rounded double seams permit each section to turn freely without any chance of becoming disconnected. Elbows can be adjusted to any angle between a straight line and a right angle.
Imperial 30 Ga. 3-1/4 In. x 10 In. x 24 In. Galvanized Stack Duct
Imperial 30 Ga. 2-1/4 In. x 12 In. x 6 In. Universal Register Boot
Imperial Manufacturing Increaser/Reducer - No Crimp
Imperial 24 Ga. 8 In. Galvanzied Adjustable Elbow
Imperial 30 Ga. 6 In. Galvanized Top Take-Off
