Arctic Spa Silver Sentinel Threaded Filter - 2009-current Models.<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Maintenance Free</li><li>Original Manufacture Filter</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41py3zNlEQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41LTCOZF8mL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31dj9c5UwKL.jpg" noproxy>