AirDog WS100 Pre-Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>None</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41SNGYDcCOL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hOWJ2G3UL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31bRhZ23YUL.jpg" noproxy>