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The Rectorseal SST-BB is a transition duct designed specifically for connecting a B furnace measuring twenty-one inches by seventeen and a half inches to a B box coil with a size of twenty-one inches by seventeen and three-quarters inches. This product is useful for HVAC installations that require a seamless transition between differing component sizes.
This transition duct is manufactured to facilitate proper airflow between two key HVAC components, ensuring efficient heating and cooling operations.
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