MARINELAND EMPEROR POWER FILTER CARTRIDGES. RITE SIZE E. 12 PK</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Convenient 12pk (3) 4pk boxes</li><li>Marineland OEM Rite Size E</li><li>Meets the highest standards of water purification and operational ease</li><li>Each cartridge is pre-assembled</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51L8nsNrZqL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51sY5rW7SxL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/5102PZDKkcL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51Md3qiM2ZL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31mnssiSGSL.jpg' noproxy></br>