Hardware Concepts Ventelation Grommet Round Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>2 1/2" Diameter hole</li><li>3" Overall diameter</li><li>Cabinet Ventilation， Round</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41zq24zaPuL.jpg" noproxy>