Speedi-Products SM-WYE 644 6-Inch by 4-Inch by 4-Inch Round Pipe Wye Branch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Used for splitting supply， return or exhaust branch lines</li><li>Crimped ends for easy installation</li><li>Seal joints with approved duct mastic sealants</li><li>Insulate Ductwork for improved energy efficiency and comfort</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51wPF6RkbUL.jpg" noproxy>