301 bottom filter each

A: We sell only one filter size. The filters for the 301 are the same size filter as used on the discontinued Rena Air series pumps 100-400. Originally the 301 filters were much larger and had a plastic cover over the filter. We still have some of these if your pump is very old. It is much larger. You can call our offices if you need to purchase that.

The Rena Air 50 has a separate filter which is not on this site since that pump has been discontinued. You might try Frog Pond Aquatics on Ebay. They often sell hard to find items like that. Answer provided by:  Administrator (6/1/2015)