Rainbow/Pentair RTL-25, model R172512 is a 1-1/2"fpt top load filter. For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while the top...
R172514 Rainbow/Pentair RTL-50, model R172514 is a 1-1/2"fpt top load filter. For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while...