Canplas 133070W Vent Pipe Cap<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Interior supports accommodate either 3" or 4" pipe in a variety of materials(ABS DWV， PVC DWV and PVC sewer)</li><li>Cap is secured to vent pipe by utilizing two self-tapping screws</li><li>Installation screws are recessed into the cap</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31xUPd3pLYL.jpg" noproxy>