Pentair System 3 Modular Media Filter S7M400 Replacement Cartridge Pack | 170146 120V Pentair Color Spa Lights This closes when not in

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

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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 drain helps sustain efficient cleaning performance

Pentair System 3 Modular Media Filter S7M400 Replacement Cartridge Pack | 170146 120V Pentair Color Spa Lights This closes when not inPentair 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