Lee's 20L/29 Premium Undergravel Filter， 12-Inch by 30-Inch</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>The larger plate sizes reduce the number of plates required</li><li>The added strength of the UGF plates makes this filter most preferred by saltwater aquarists</li><li>Size: 12-inch by 30-inch</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/414n5lAcPAL.jpg' noproxy></br>