Speedi-Products SM-28A90 04 4-Inch 28-Gauge 90-Degree Round Adjustable Elbow
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<b>[Product Information]</b><br>
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<li>4-Inch Sheet Metal 28 Gauge adjustable elbows</li>
<li>Used in HVAC round pipe and flexible Warm air duct systems</li>
<li>For turns through 90 degrees and are simple to adjust</li>
<li>Seal joints with approved duct mastic sealants</li>
<li>Insulate Ductwork for improved energy efficiency and comfort</li>
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