The company that manufactures them is a multi-national called Jebo. Good luck. I got one in a used set up I recently bought...it leaks at the point where the motor hosing sets on the plastic filter box. I think these filters may be "crap". If you hear otherwise please let me know (you can buy brand new ones on line, with media for about $65 US plus shipping, so I may be tempted to try a new one.