Guardian pool/spa filter fits:Pleatco: PFF50P4 | Unicel: 5CH-45 | Filbur: FC-2401freeflo，freeflow， aquaterra spas
<div style="text-align: left;"><strong>[Product Information]</strong><br>
<ul>
<li>5ch-45</li>
<li>1 1/2'' MPT threaded</li>
<li>Length 10''</li>
<li>diameter 5 5/16''</li>
<li>45 sq ft.</li>
</ul>
</div>
<img src="http://ecx.images-amazon.com/images/I/31dEYnP6e6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31LIxAaPiML.jpg" noproxy>