POWERTEC 70126 Inlet Flange， 4-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Designed to attach easily and securely to machines for connecting to dust collection systems</li><li>Pre-bored mounting holes for easy and secure installation</li><li>Tough， durable ABS plastic material</li><li>Flange diameter measures 5-9/16-Inch</li><li>4-Inch nominal end measures 3-59/64-Inch OD. And 3-23/32-Inch I.D.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41QN0-NbDDL.jpg" noproxy>