Filter is used on the following Jacuzzi Hot Tubs:
All J500 series 2015+
All J400 series 2013+
J400 2012 models J495, J425 and J415
All J300 series 2014+
NOTE: THIS IS BAG DOESN'T HAVE THE SAME SHAPE AS 2013 AND OLDER J-300 SERIES BAG
-this is not the same bag as 6570-392