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IMPERIAL 12-in x 4-in x 6-in Galvanized Steel 90 Degree Register Duct Boot in the Duct Transitions & Connectors department at Lowes.com
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HVAC Premium Galvanized Round Stack Boot | Stack Boot 10" X 3.25" X 5"| Round Stack Boot is Compatible with Duct 5" - - Amazon.com
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IMPERIAL 14-in x 6-in Galvanized Steel Straight Register Duct Boot in the Duct Transitions & Connectors department at Lowes.com
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Made in USA - 2-1/4" ID, Galvanized Duct Register Boots 90 Degree - 03379260 - MSC Industrial Supply
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