Pentair System 3 Modular Media Filter S7M400 Replacement Cartridge Pack | 170146 120V Pentair Color Spa Lights once they are in it

once they are in it is nearly impossible to remove them without causing damage to the nozzle or the pop-up head

The strainer is located inside the 2-inch union on top of the Caretaker water valve and can be accessed in a matter of seconds

The cylinder itself is the item that covers and protects the piston assembly as it pumps up and down providing the power necessary to clean as well as move around the top surface of the water

This closes when not in use to prevent entrapment and holds your automatic vacuum hose in place when in use

Pentair System 3 Modular Media Filter S7M400 Replacement Cartridge Pack | 170146 120V Pentair Color Spa Lights once they are in itPentair System 3 Modular Media Filter S7M400 Replacement Cartridge Pack 170146 Replacement inner & outer cartridges for Pentair System 3 S7M400 136 sq ft + 264 sq ft modules. Features Includes one inner 136 sq ft cartridge and one outer 264 sq ft cartridge Direct OEM compatibility with the S7M400 modular media filter Robust media construction resists degradation over repeated use Maintains balanced flow dynamics to protect pump efficiency Quick swap