2) Unicel 5CH-502 Marquis Spa Filter Replacement 20041 20042 Cartridges C-5303<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>50 Sq Ft</li><li>Length: 12-1/2"</li><li>Outside Diameter: 5-3/16"</li><li>Top Hole: Bar Handle</li><li>Bottom Hole: 2" Male Thread/MPT</li></ul></div><img src="http://ecx.images-amazon.com/images/I/517pqXSS9RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41sj0LbljIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41mN7rCOXzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51Ie-nOYlVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41LHlpYnrgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/518ZWrhqO4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hJ2gQZJCL.jpg" noproxy>