Polaris 3900 Sport Bottom Housing | 39-004 Bio-Dex Algaecide Always verify the correct 2-port

Always verify the correct 2-port gear module before reassembly to ensure proper zone sequencing and flow balance

Caretaker 5-Port Top Housing for 1

The majority of the parts included with this assembly are black except for the restrictor disks which are blue and red

and the larger locking tab provides a tighter fit and smoother operation

which is one less thing to worry about when it comes to pool maintenance

Polaris 3900 Sport Bottom Housing | 39-004 Bio-Dex Algaecide Always verify the correct 2-portPolaris 3900 Sport Bottom Housing (39 004) The bottom housing is a replacement part made by Polaris. The same high grade plastic material was used to make the original factory part. Making this a genuine OEM product. This bottom housing was designed to be the housing unit for all of the internal parts. They give the cleaner its power and ability to clean the dirt, debris, and other forms of mulch off the surface of your pool. leaving behind a crystal