Darlly Cartridge [75 sq ft, 5-13/16" OD Top x 6-1/16" OD Bottom x 9-15/16" dia x 14-1/4" L] (90753) multiportvalves An impeller is useful because

An impeller is useful because it helps drive water through the pump housing

or no longer sealing confidently at the O-ring surface

and this Balboa VS523DZ Spa Control System is designed for compatible applications where the original pack has become unreliable or visually aging components are no longer worth continuing to patch

A wound timer helps provide short-duration countdown control for a compatible electrical load

Darlly Cartridge [75 sq ft, 5-13/16" OD Top x 6-1/16" OD Bottom x 9-15/16" dia x 14-1/4" L] (90753) multiportvalves An impeller is useful becauseThe Darlly 90753 filter cartridge is designed for compatible filtration systems that require 75 square feet of media in a 9 15 16 inch diameter body. With a 5 13 16 inch top opening, 6 1 16 inch bottom opening, and 14 1 4 inch length, this cartridge is a fit specific solution for housings built around wider, shorter filter elements. Different top and bottom opening sizes can make all the difference in choosing the right replacement cartridge. This